The right answer is option E) After a helium flash, the star's core suddenly contracts and heats up, causing the outer layers to expand. Helium fusion begins in a shell outside the core, leading to further evolution of the star.
A low-mass star begins combining helium in its centre when its core hydrogen is exhausted. The centre temperature increases and the star's exterior layers enlarge as helium fusion starts. Helium flashes, on the other hand, happen when the core hits a crucial temperature.
The centre abruptly shrinks and heats up during a helium flash, causing the exterior layers to enlarge even more. Helium fusion begins in a shell outside the centre after the explosion because the interior temperature is too low to support fusion. The star then moves into a new stage of its development, with the centre gradually contracting and heating up while the shell starts to consume helium.
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which area near the congo basin has the highest level of precipitation in africa?
The Congo Basin is one of the most biodiverse regions in the world and is characterized by dense rainforests and high levels of rainfall. However, even within the Congo Basin, there are areas that receive particularly high levels of precipitation.
One of the areas with the highest level of precipitation in Africa is the eastern edge of the Congo Basin, which includes parts of Uganda, Rwanda, Burundi, and Tanzania. This area is known as the Albertine Rift, and it is characterized by high mountain ranges and steep valleys, which can cause orographic uplift and enhance rainfall. In particular, the Rwenzori Mountains, which straddle the border between Uganda and the Democratic Republic of Congo, are known for their high levels of precipitation. The peaks of the Rwenzoris are often shrouded in mist and fog, and the mountains receive an average of over 5,000 mm of rainfall per year, making them one of the wettest places in Africa. The high levels of precipitation in the Albertine Rift are important for the region's ecosystems, including its rainforests, wetlands, and lakes. However, they can also lead to hazards such as landslides and flooding, particularly in areas with steep slopes or poor soil stability.
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the boundary between tectonic plates that are colliding is called?
The boundary between tectonic plates that are colliding is called a convergent boundary. The word convergent means to come together or to meet at a common point.
Tectonic plates are slabs of lithosphere that move on the asthenosphere's ductile and flowing mantle beneath Earth's surface. The lithosphere is made up of Earth's outermost layer, including the crust and the uppermost part of the mantle, which is strong and rigid. It is divided into several large and small plates that move independently of one another.
Earth's lithosphere is broken up into many tectonic plates, and these plates float on the asthenosphere's plastic-like mantle material. When two tectonic plates collide, a convergent boundary is formed. Convergent boundaries are where two plates move toward each other, with one plate slipping beneath the other in a process known as subduction.
The subduction zone forms the boundary between two tectonic plates. The boundary between the overriding and subducting plates, known as the Benioff zone, is the location of intense seismic activity caused by the sinking of the subducting plate.
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the graph to the left shows the flow and temperature of ocean currents, and the graphs to the right indicate prevailing wind directions. ocean currents and wind directions can combine to influence terrestrial climatic conditions. which land masses will be warmer?
The graph on the left shows the flow and temperature of ocean currents, and the graphs on the right indicate the prevailing wind directions. Ocean currents and wind directions can combine to influence terrestrial climatic conditions. The land masses that will be warmer are the continents located in the western hemisphere.
The continents in the western hemisphere are expected to be warmer due to the clockwise motion of the ocean currents in the northern hemisphere. This motion allows for the warm water to be transported from the equator to the poles, which then creates a warming effect on the land masses.
On the other hand, the land masses in the eastern hemisphere are expected to be cooler due to the counter-clockwise motion of the ocean currents in the southern hemisphere.The prevailing winds also play a role in the climatic conditions of land masses. The land masses that are closer to the equator and that experience the trade winds will have a warmer climate due to the constant warm air flow.
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During an El Niño event, the South Equatorial Current reverses direction and flows over the top of northern portions of the Peru Current, causinganswer choiceswarmer surface ocean waters along the northeast coast of South Americawarmer surface ocean waters along the northwest coast of South Americacooler surface ocean waters along the northeast coast of South Americacooler surface ocean waters along the northwest coast of South America
During an El Niño event, the South Equatorial Current reverses direction and flows over the top of northern portions of the Peru Current.
This causes warmer surface ocean waters along the northwest coast of South America. The warmer water displaces the cold, nutrient-rich water that typically upwells along the coast, leading to changes in marine ecosystems and weather patterns in the region. These changes can have significant impacts on local fisheries, as well as on agriculture and other industries that rely on predictable weather patterns.
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Discuss the path of the tropical cyclone Eloise
The tropical Cyclone Eloise first emerged in Madagascar, then re-emerged in the Mozambique Channel that led to flooding and other natural disasters.
How the path of cyclone Eloise was formedTropical Cyclone Eloise formed on January 16, 2021, in the Mozambique Channel, west of Madagascar. It rapidly intensified into a severe tropical storm and made landfall in Madagascar, causing flooding and landslides.
After crossing Madagascar, Eloise re-emerged over the warm waters of the Mozambique Channel, where it intensified into a Category 2 cyclone. It then made a second landfall on January 23, 2021, in the central region of Mozambique, causing widespread damage and flooding.
Eloise weakened as it moved inland and continued to cause heavy rainfall and flooding in Mozambique, Zimbabwe, and South Africa. The storm dissipated on January 28, 2021.
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which city is the capital of a large island nation in the indian ocean
The capital of a large island nation in the Indian Ocean is Port Louis, located on the island of Mauritius.
Mauritius is a small, multi-cultural island nation located off the southeast coast of Africa. It is known for its stunning beaches, vibrant culture, and diverse wildlife. The capital city of Port Louis is home to a variety of cultural attractions, including the Natural History Museum, the Caudan Waterfront, and the Aapravasi Ghat, a UNESCO World Heritage Site.
The city also offers a wide range of shopping, dining, and entertainment options. As a major port and cruise ship destination, Port Louis offers a unique blend of modernity and tradition, making it an ideal destination for tourists.
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most volcanic activity is not noticed by humans because
Most volcanic activity is not noticed by humans because it happens in remote areas or in the ocean.
Also, some volcanoes are dormant for long ages of time, and people may not realize that it's still active. Indeed when volcanoes do erupt, the goods may be localized and may not be noticed by people in other corridor of the world. lower eruptions may also not be detected, or they may do in areas with veritably many people.
also, numerous volcanoes are located in regions with delicate access, making it hard for people to observe the exertion.
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POV:The time you choose to resolve conflict can have a huge impact on the outcome. why do you think time would have an impact
The timing of conflict resolution can have a significant impact on the outcome because emotions and perceptions can change over time
Why will the time have an impact for the outcome?If a conflict is addressed early on, it may be easier to resolve because emotions and tensions have not escalated, and the parties involved may be more willing to listen to each other's perspectives. On the other hand, if a conflict is left unresolved for too long, it may become more difficult to resolve as emotions and tensions may have built up and hardened positions.
Therefore, the longer a conflict persists, the more likely it is to have a negative impact on relationships and productivity. Addressing conflicts in a timely manner can help prevent further escalation and promote a more positive outcome for all parties involved.
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question meteorologists studying the change in a region's precipitation over a 20-year period are studying the region's . which term best completes the sentence? responses
The climatology of a location is examined by meteorologists who examine the evolution of precipitation during a 20-year period in the area.
The study of long-term trends and variations in temperature, precipitation, and other weather-related variables is known as climatology.
Meteorologists can discover changes in the region's precipitation patterns and establish if the climate is becoming drier or wetter by evaluating data over a period of at least 20 years. Agriculture, water management, and disaster preparedness are just a few of the uses for this information.
To collect and evaluate data and forecast future climate patterns, climatologists employ a number of technologies, such as satellite images, ground-based weather stations, and computer models.
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The question is -
Meteorologists studying the change in a region's precipitation over a 20-year period are studying the region's __________.
large solar eruptions that occur near sunspots are
Solar eruptions near sunspots are known as solar flares.
A solar flare is a unforeseen, violent burst of radiation forming from the sun's face, caused by the release of glamorous energy stored in the Sun's atmosphere. Solar flares can be caused by a variety of sources, similar as sunspots, glamorous reconnection, and solar gyration.
The solar flares can last from twinkles to hours, and can be extremely important; emitting a tremendous quantum of energy in the form ofX-rays, gamma shafts, and other forms of high- energy radiation. Solar flares can disrupt Earth's atmosphere, performing in dislocation to dispatches, navigation, and power systems on the ground.
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all atc facilities using radar weather processors with the ability to determine precipitation intensities will describe the intensity as
ATC facilities use radar weather processors to determine precipitation intensities as light, moderate, heavy and very heavy.
The intensity of precipitation is described using different terminologies, depending on the specific weather conditions or systems that are present. Most ATC facilities use the Weather Radar System to provide an accurate and reliable forecast of weather conditions in real-time.
The system uses Doppler radar to track weather patterns and detect precipitation. Doppler radar sends out radio waves that bounce back when they hit precipitation, and the return signal gives information about the location, intensity, and movement of precipitation.
The following are the precipitation intensity descriptions used in ATC facilities using radar weather processors:
Light: This is used to describe a weak shower that has a low precipitation intensity. Moderate: This is used to describe a shower that has a slightly higher precipitation intensity than a light shower, but is still not heavy.Heavy: This is used to describe a shower that has a high precipitation intensity and is likely to cause flooding or other severe weather conditions.Very Heavy: This is used to describe a shower that has an extremely high precipitation intensity and is likely to cause significant damage or destruction.To know more about precipitation intensities, click on the link below:
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many living in sub-saharan africa primarily earn a living engaged in farming or pastoral herding, resulting in a region that is characterized by economies that are considered ?
Many people living in sub-Saharan Africa primarily earn a living engaged in farming or pastoral herding, resulting in a region that is characterized by economies that are considered predominantly agricultural.
This means that a significant portion of the economy is based on the production and export of agricultural products such as crops, livestock, and other related goods. Agricultural activities are often carried out on a small scale and are heavily dependent on the climate and natural resources, making them vulnerable to factors such as droughts, pests, and soil degradation. Despite these challenges, agriculture remains a critical source of livelihood and income for millions of people in sub-Saharan Africa.
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what is the primary cause of deep currents in the ocean?
The primary cause of deep currents in the ocean is the sinking of dense, cold water at high latitudes due to the cooling and increased salinity of surface waters.
This process is known as thermohaline circulation, or the ocean conveyor belt. In polar regions, seawater is cooled by cold air temperatures and ice formation, which increases its density. Additionally, as sea ice forms, it expels salt, making the surrounding seawater even saltier and denser. This dense, cold water sinks and begins to flow towards the equator, where it eventually upwells to the surface and begins the cycle again. The sinking of this dense water initiates a slow, deep ocean current that can transport vast amounts of water and heat around the globe. These deep currents play an important role in regulating the Earth's climate by transporting heat from the tropics to the poles and vice versa.
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what is a Physiographic boundary in Europe ?
A Physiological boundary in Europe would be a place such as the Alps or the Danube river.
What are Physiological boundaries ?Physiographic boundaries in Europe refer to natural features such as mountains, rivers, and other physical terrain features that serve as natural borders between different regions or countries.
Examples of physiographic boundaries in Europe include the Alps, which separate Italy from France, Switzerland, Austria, and Slovenia; the Pyrenees, which form the border between France and Spain; the Danube River, which separates eastern and western Europe; and the Ural Mountains, which mark the boundary between Europe and Asia.
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Which characteristic of water protects fish when a lake freezes? A. cohesion B. All of the these characteristics. C. water as a solvent D. water is less dense as a solid
Water protects fish when a lake freezes because of several key characteristics so all of the these characteristics therefore the correct option is B..
Cohesion, meaning it sticks together and is attracted to other water molecules. This helps form a solid layer on the face of the lake that insulates the fish below. Second, water is less thick as a solid, meaning it's lighter and thus floats on top of the thick liquid water below. This helps to form a defensive layer that keeps the fish below safe.
Eventually, water is an excellent detergent, meaning it can dissolve numerous substances. This helps to keep the water temperature below the freezing point, allowing the fish to remain comfortable. All of these characteristics help to cover fish when a lake freezes.
Hence the correct option is B.
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How long does it take the Moon to make one rotation around the Earth?
referring to the accompanying seismogram, which of the seismic waves had the highest amplitude when it reached the seismic station?
Referring to the accompanying seismogram, the seismic wave that had the highest amplitude when it reached the seismic station is the surface waves.
What is a Seismogram?A seismogram is a graphical representation of seismic waves that are detected by a seismometer. These waves are produced by natural and artificial earthquakes, volcanic activity, and explosions.
How to read a Seismogram?A seismogram displays the passage of different types of seismic waves through the Earth's interior. On the horizontal axis, the time is plotted. On the vertical axis, the amplitude of the seismic waves is plotted. Seismograms are used to study earthquakes and seismic waves produced by human activities.
What are the different types of seismic waves?The three different types of seismic waves are P-waves, S-waves, and surface waves.
P-waves or primary waves travel through the Earth's interior, and they are the fastest seismic waves. These waves are longitudinal, meaning that the particles move in a back-and-forth direction along the same line as the wave's movement.
S-waves or secondary waves are transverse waves, meaning that they move up and down perpendicular to the wave's direction of movement. They are slower than P-waves and can only pass through solids.
Surface waves are the slowest seismic waves and can cause the most damage. They are produced when P-waves and S-waves reach the Earth's surface. These waves move along the Earth's surface and produce rolling and shaking motions.
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which factors influence the amount of destruction that seismic vibrations cause to human-made structures? please select all that apply.
The factors influence the amount of destruction that seismic vibrations cause to human-made structures are the magnitude of the seismic event and the type and quality of the building materials used.
The amount of destruction that seismic vibrations cause to human-made structures is influenced by several factors, including the magnitude of the seismic event, the type and quality of the building materials used, the location and depth of the seismic event, and the distance from the epicenter. The magnitude of the seismic event is the primary factor that determines the amount of destruction.
Higher magnitude events create more powerful seismic waves, which can cause more damage to structures. The type and quality of building materials used is also a factor, as certain materials are better able to withstand seismic vibrations. The location and depth of the seismic event are also important, as shallow quakes cause more destruction than those at a deeper depth. Lastly, the distance from the epicenter can determine the amount of destruction, as the intensity of seismic waves weakens with distance.
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large solar eruptions that occur near sunspots are ______.
Large solar eruptions that occur near sunspots are called solar flares.
What are solar flares?
A solar flare is an explosive eruption of solar radiation from the Sun's surface. The Sun's magnetic field is the driving force behind these eruptions. The charged particles produced during these events can affect the Earth's magnetic field, causing geomagnetic storms and potentially interfering with satellite and communication systems.
According to NASA, solar flares are classified based on their brightness and duration. They are classified as C, M, or X flares, with X flares being the most powerful. The energy released during a solar flare can be equivalent to millions of hydrogen bombs.
What are sunspots?
A sunspot is a temporary region of the Sun's surface that is cooler than its surroundings. Sunspots are caused by the Sun's magnetic field. Sunspots appear as dark spots on the Sun's surface, but they are not actually dark. They only appear dark since they are cooler than the surrounding plasma.
The relationship between sunspots and solar flares is that solar flares often occur near sunspots. When sunspots form on the Sun's surface, they are associated with strong magnetic fields. These magnetic fields can cause intense solar eruptions, including solar flares and coronal mass ejections (CMEs).
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What is the movement of weathered rock by wind water or ice?
The movement of weathered rock by wind, water, or ice is called erosion.
Erosion is the process of the gradual wearing away or displacement of rock and soil through the action of natural elements. Wind erosion occurs when wind picks up and carries small particles of sand and dust, resulting in the sculpting of landscapes such as sand dunes.
Water erosion occurs when running water wears away the soil and rock, forming channels, valleys, and canyons. Ice erosion, also known as glacial erosion, occurs when glaciers move over the land, carrying rocks and debris and carving out valleys and fjords.
Erosion is a natural process that can have significant impacts on the landscape over time, including changes to the shape and structure of landforms and the redistribution of sediment and nutrients. However, human activities such as deforestation, construction, and mining can accelerate erosion and lead to harmful environmental impacts.
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Why is the Indian subcontinent considered a peninsula?
It is one of the largest countries in Asia.
It is one of the largest countries in Asia.
It sticks out from the southern part of Asia.
It sticks out from the southern part of Asia.
It connects Asia to the Middle East.
It connects Asia to the Middle East.
It is surrounded by water on three sides.
Answer:
It’s because the Indian subcontinent is surrounded by water on three sides of its land
the himalaya mountains were formed in a collision at a
What often forms when large terranes and continents collide? answer choices. small volcanic islands. cratons. small coral islands. major mountain chains.
Major mountain chains often form when large terranes and continents collide. This is due to the intense compression and deformation of the Earth's crust that occurs during such collisions.
Major mountain ranges frequently develop as a result of the intense compression and deformation of the Earth's crust during the collision of big terranes and continents. As a result, rocks may be uplifted and folded, thrust fractures may develop, and vast geological structures like valleys, hills, and plateaus may be produced.
The Himalayas, the Alps, and the Andes are a few examples of large mountain ranges created by continental impacts. While cratons are vast, stable areas of the Earth's bedrock that have not undergone major tectonic activity for billions of years, tiny volcano islands and coral atolls, on the other hand, are usually created by volcanic activity or coral reef development, respectively.
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the seismic wave that does the most damage to buildings that are far from coastlines is the: group of answer choices
The seismic wave that does the most damage to buildings that are far from coastlines is the surface wave, also known as the Love wave.
This type of seismic wave travels along the surface of the Earth and causes the ground to move side-to-side in a horizontal motion. This motion can cause significant damage to buildings and other structures, especially those that are not well designed or constructed to withstand seismic activity. The Love wave is particularly damaging because it has a large amplitude and a long wavelength, which allows it to travel long distances and cause significant ground motion even at far distances from the earthquake's epicenter. Unlike other types of seismic waves, such as P-waves and S-waves, Love waves are primarily responsible for the damage that is observed in earthquakes that occur far from coastlines.
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what kind of foliation is displayed in the outcrop below? note that differential stress folded the foliation in this rock, curving its foliation planes. choose one: a. preferred orientation b. alternating light- and dark-colored layers
According to the description given, the foliation visible in the outcrop appears to be a foliation with a favored orientation. This happens when minerals within a rock align themselves in a preferred orientation.
Which specific kind of differential stress causes foliation?The preferred orientation of phylosilicates, such as clay minerals, micas, and chlorite, is what leads to the majority of foliation. Non-hydrostatic or differential stress acting on the rock causes preferred orientation to evolve (also called deviatoric stress).
What does a rock's differential stress mean?Differential stress is the ability of materials like rocks to withstand stresses of various intensities and orientations. Differential stress is the term used to describe the difference between the biggest and smallest stress. Layered texture is the consequence of grain alignment.
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Can scientists predict earthquakes now?
O Yes, they use the same methods in predicting volcanic eruptions
Yes, scientist can predict an earthquake right before it occurs, but not enough time to save lives
O No, scientists can only look for early warning signs
OYes, however, they cannot predict the magnitude
Answer:
No, scientists can only look for early warning signs.
Explanation:
Scientists cannot predict earthquakes exactly because by the time you get to feel the shock waves, the earth quake has already reached you.
Scientists who study earthquakes say there is no method at present which can predict the time and intensity of this natural calamity. While the probability of an earthquake can be estimated, those claiming to predict the exact date and time are just fooling the public.
According to the United States Geological Survey (USGS), one of the most reliable and technically advanced organization involved in studying earthquakes, scientists are unlikely to be ever be able to predict them.
Seismologists and geologists universally agree that predicting an earthquake is not possible. They say that while there is always a change of a major earthquake in a geologically active area like the Himalayas where the Eurasian and Indian plates meet, there is no scientific method to find out in advance the date, time and intensity is such a temblor. On the basis of scientific data and studies, the probability of a future earthquake can be calculated, but even then it is not every accurate.
The Treaty of Nanjing gave control of this island to Britain.Hong KongJapanFranceGermany
The Treaty of Nanjing gave control of Hong Kong to Britain.
The correct answer is Hong Kong
The Treaty of Nanjing, also known as the Treaty of Nanking, was signed in 1842 between China and Great Britain, following the First Opium War. The treaty ended the hostilities between the two nations and resulted in significant concessions by China to Britain. One of these concessions was the cession of Hong Kong Island to Britain.
Under the terms of the treaty, Hong Kong became a British colony, with Britain assuming control over the island's administration, trade, and defense. The treaty had a profound impact on Hong Kong's development and history, as it marked the beginning of its transformation into a major center of trade and commerce in Asia. The British rule over Hong Kong continued until 1997 when it was transferred back to China.
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what country holds the title of largest democracy in africa?Africa Americas Asia Australia China Europe India Middle East United Kingdom Politics
Answer:
Nigeria
Explanation:
Nigeria holds the title of the largest democracy in Africa.
In the largest and most populous country in Africa, which is thought to contain more than 200 million inhabitants, the previous eight years have been especially gloomy for many. Almost all of the issues facing the nation, such as the economy and security, have deepened into crises.
Since the administration of departing President Muhammadu Buhari assumed office in 2015, millions of jobs have been lost, and over half of the country's youth are unemployed. The naira, the currency of Nigeria, has lost value as inflation has skyrocketed and oil output has fallen to a 40-year low.
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Q. 1) From the following choices, please identify the three characteristics that represent the Middle East.
Select 3 correct answer(s)
A. Located in Europe, Asia, and Africa
B. Oil is the most valuable natural resource
C. Entire region consists of arable land
D. Most countries speak Arabic
E. Scarce population along the Nile River
Q. 2) Identify two key economic facts of the Middle East. (choose all that apply)
Select 2 correct answer(s)
Aswan High Dam increases agricultural production
Suez Canal negatively affects trade
Oil companies hire mostly local residents
Strait of Hormuz drives oil transportation
Answer:
Q. 1) From the following choices, please identify the three characteristics that represent the Middle East.
Select 3 correct answer(s):
A. Located in Europe, Asia, and Africa
B. Oil is the most valuable natural resource
D. Most countries speak Arabic
Q. 2) Identify two key economic facts of the Middle East. (choose all that apply)
Select 2 correct answer(s):
Aswan High Dam increases agricultural production
Strait of Hormuz drives oil transportation
The three characteristics that represent the Middle East are:
A. Located in Europe, Asia, and Africa.
B. Oil is the most valuable natural resource.
D. Most countries speak Arabic.
What is known about Middle East?Arabia, Asia Minor, East Thrace, Egypt, Iran, the Levant, Mesopotamia, and the Socotra Archipelago are all considered to be parts of the Middle East. Beginning in the early 20th century, the phrase began to replace the phrase "Near East" in everyday speech.
13 out of the 18 countries in the Middle East are Arab nations. Saudi Arabia is the largest Middle Eastern country in terms of area, with Egypt, Turkey, and Iran having the highest populations in the region.
Two economic factors of the Middle East are-
Aswan High Dam increases agricultural production.Strait of Hormuz drives oil transportationTherefore, the characteristics and two key economic facts of the Middle East are mentioned above.
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The group of processes that change rocks exposed to the Earth's surface, these rocks are subjected to destructive forces such as: wind, water, acids, etc.
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface.
Weathering and People Weathering is a natural process, but human activities can speed it up. For example, certain kinds of air pollution increase the rate of weathering. Burning coal, natural gas, and petroleum releases chemicals such as nitrogen oxide and sulfur dioxide into the atmosphere. When these chemicals combine with sunlight and moisture, they change into acids. They then fall back to Earth as acid rain. Acid rain rapidly weathers limestone, marble, and other kinds of stone. The effects of acid rain can often be seen on gravestones, making names and other inscriptions impossible to read. Acid rain has also damaged many historic buildings and monuments.
Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion.
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