Gene flow as well as genetic drift seem to be the two primary drivers of genetic variability.
Genetic variations are adjustments or alterations that occur in the gene order of DNA. Those genetic variants were critical since these drive most living things' evolution. The two primary variables that determine genetic diversity in a population are DNA mutation and sexual reproduction.
A genetic mutation is a change in the DNA sequencing of a gene that leads in the synthesis of a distinct type of product. Through sexual reproduction, two people contribute individual germ cells to produce kids. Variations occur as a result of the offspring acquiring DNA from either parent.
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Why are landfill liners NOT a reliable safeguard against aquifer contamination?
Because its dirty not good for a realiable safegurd and its against aquifer contamination everyday
What are examples of environmental variations?
Examples of environmental variations:
Hair length: The length at which you want to wear your hair.Scars from your own accidents .Your muscle strength is based on how much exercise you get.Piercings: whether you decide to get them or not.Environmental variation refers to an organism's capacity to significantly vary its PHENOTYPE in response to environmental factors. Plants exhibit the phenomenon the most clearly, possibly because they are permanently rooted in the earth. For instance, if a dandelion is planted in a garden border with other plants, it will develop an upright posture with long blossom stalks. If cultivated on a garden lawn, a different dandelion with a similar genotype will result in a PROCUMBENT habit with short flower stalks.
Climate, diet, accidents, culture, and way of life are only a few examples of the variables that might have an impact on an animal's or plant's characteristics. For instance, you will put on weight if you eat too much, and you will lose weight if you eat too little.
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Use this graphic to answer the question.
An environmentalist uses a bar graph, a diagram, and a map as part of a presentation to Congress about global
warming.
Based on the process outlined in the diagram, what has most likely caused the higher levels of global surface
temperature since the 1980s, as shown in the bar chart?
O decreased ocean temperatures
O increased levels of greenhouse gases
O decreased solar and mermal radiation
O increased global surface temperatures
The various greenhouse gases' varying contributions to global warming are as follows: planting trees can reduce CO2 by 60%. More carbon dioxide is removed from the atmosphere by trees than is released.
What effects of global warming have you personally noticed? How has it influenced the planet thus far?Storms, heat waves, floods, and droughts are just a few of the disasters that are getting worse as a result of rising temperatures. Warmer temperatures produce an atmosphere that can hold onto, release, and gather more water. This alters weather patterns such that wet areas get wetter and dry ones to get drier.
How are climate change and global warming-related?The heat from the sun gets trapped on Earth as a result of greenhouse gas production. Global warming and climate change result from this. The rate of global warming is presently higher than it has ever been. Weather patterns are shifting as a result of warming temperatures, which is also upsetting the natural order.
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Your teammate is spinning a tennis ball on a string in a perfect circle. If the radius of the circle is 45 cm and the ball travels half the
circumference of the circle in 15 seconds, what is the velocity of the ball rounded to the nearest whole number?
A
3 m/s
B)
30 cm/s
94 cm/s
D)
212 cm/s
Answer:
94 cm/s
Explanation:
The velocity of an object in circular motion is the distance traveled over time. The distance traveled is the circumference. Half the circumference of a circle with radius r is πr. The velocity is this distance over time, in this case, 1.5 s. The ball’s velocity is therefore
πr
t
=
45π
0.5
≈ 94.2 cm/s
Which is an example of a stable ecosystem?
a crop of potatoes
a field of red tulips
a rain forest
all of the above
Which of the following matches enzyme components with their correct definition and/or function? a. Apoenzymes are the non-protein component of an enzyme. b. Apoenzymes are typically inorganic molecules, such as iron, zinc, or magnesium. song c. Coenzymes are organic cofactors important to enzyme activity. d. Cofactors are the protein components of enzymes.
c. Coenzymes are organic cofactors important to enzyme activity.
Enzymes are complex proteins that catalyze chemical reactions in the body. Enzyme activity can be influenced by other molecules, such as cofactors and coenzymes. Cofactors are non-protein molecules that bind to enzymes and can be either inorganic or organic.
Apoenzymes are the protein component of an enzyme, while coenzymes are organic molecules that bind to the enzyme temporarily and are necessary for the enzyme to function properly.
Coenzymes are organic cofactors important to enzyme activity while it's not typical that apoenzymes are typically inorganic molecules, such as iron, zinc, or magnesium, some enzymes do require metal ions as cofactors.
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In a far-off galaxy, an astronomer observes a moon orbiting a planet. The moon stays in orbit because of the planet’s gravity.
Which scenario would increase the gravity of the planet?
WILL GIVE BRAINLIEST - What has happened to the temperatures since the Ice age?
A. Temperatures have decreased
B. Temperatures have slightly increased
C. Temperatures have increased a large amount
D. Temperatures have not changed at all
Answer:
C
Explanation:
Please mark brainliest
Answer:
b
Explanation:
Its called global warming
WILL GIVE BRAINLIEST 20 POINTS
A young woman, who has acutely poor nutrition (due to her bulimia) and frequently takes various pharmaceutical drugs for recreational purposes, goes on a three-week vacation. She becomes incredibly sick on the first day with the flu, spending the entire vacation in bed. Five weeks after her return, she discovers that she is pregnant and in her 10th week. Which of the following is the greatest concern that a doctor may have about her pregnancy in regard to the effects of her lifestyle?
A.
neural tube defect
B.
poor milk production
C.
sleeplessness
D.
paternal genetic profiling
E.
fetal eating disorders
Answer:
neural tube defect
Explanation:
Which factor determines if you'll hear an echo of your voice half of a hard surface? A--your mass. B-temperature of the wall c--your height D-your distance from the wall
Answer:
D
Explanation:
Facilitated diffusion allows certain kinds of compounds that are normally blocked by the cell
membrane to cross the cell membrane. All of the following are examples of compounds that
move by facilitated diffusion except
glucose.
sodium
water.
potassium.
Answer:
Potassium
Explanation:
All of the options are compounds, except for potassium which is an element
Facilitated diffusion allows certain kinds of compounds that are normally blocked by the cell membrane to cross the cell membrane is glucose because of its larger size. The diffusion will take place through GLUT transporter.
What is Facilitated diffusion ?Facilitated diffusion is the diffusion which is carried with the help of certain carriers and channels which will act as transporters in order to pass their molecules through the membrane.
Glucose is a large molecule thus even by Facilitated diffusion it will be not easy to pass through the membrane as it will require larger molecules or transporters to carried itself inside the plasma membrane.
GLUT that is the glucose transporter channel which will transport glucose inside the plasma membrane with the help of certain associations and certain binding.
therefore, Facilitated diffusion will not allow glucose because of the larger size as per possibilities.
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Desde hace siglos el cauce de los ríos no se aprovechó con molinos y rotores para aprovechar su fuerza y convertirla en energía mecánica.
Answer:
Falso (este principio es la base de la energía hidráulica la cual ha sido utilizada por siglos)
Explanation:
La energía hidráulica es un tipo de energía obtenida a partir del aprovechamiento de las corrientes de agua. La humanidad ha utilizado desde hace siglos la energía hidráulica producida por la corrientes de aguas de los ríos conectados con pequeña represas a fin de mover molinos y rotores, y así convertir la energía hídrica en energía mecánica, la cual a su vez puede ser utilizada para moler granos de cereales (molinos harineros) y también (más recientemente) para la generación de energía eléctrica. Las centrales hidroeléctricas representan la principal aplicación de la energía hidráulica en la actualidad. Las centrales hidroeléctricas utilizan el mismo principio que estos antiguos molineros harineros para producir energía, aprovechando la energía potencial del cauce del agua y su caída a un nivel inferior del cauce. En el caso de las centrales hidráulicas, el agua que cae se hace pasar por turbinas hidráulicas conectadas a un generador que produce energía eléctrica. La energía hidráulica representa un tipo de energía limpia con un gran potencial de rendimiento energético.
An organic compound is one that:
a contains carbon in all living things
b is slightly acidic in animals that live in water
c forms long chains in some living things
d is soluble in water in animals that live on land only
In the digestive system many large molecules, such as proteins, are broken down into much smaller molecules. State what happens to these smaller molecules following digestion.
Smaller molecules are taken up into the bloodstream by epithelial cells that line the walls of the small intestine. The waste continues to the colon where water is absorbed and the dried waste is compacted into feces. It is stored until excreted from the anus through the digestive system
The digestive system breaks down the food we eat into its simplest forms: glucose (sugar), amino acids (which make up protein), and fatty acids (which make up fat). Absorbed by the flow, the nutrients are carried to every cell in the body.
The human digestive system consists of the gastrointestinal tract and the accessory digestive organs. Digestion breaks down food into smaller and smaller components until they are absorbed and absorbed by the body.
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which of the following is an example of the changes that take place in an ecosystem during secondary succession
Explanation:
An example of secondary succession in an ecosystem is: Shrubs and trees regrow quickly in an area that has been burned during a forest fire.
How many total permanent teeth should an adult have, assuming none have been lost or removed? -8 -16 -20 -32
Answer:
The correct answer is 32 teeth.
Explanation:
Hope it helped:)
Why might the amount of current and voltage in a circuit need to be juggled?
a.
Because too little current cannot travel far
c.
To keep power constant
b.
To avoid burning out wires
d.
In order to get the most power possible from a given voltage
Please select the best answer from the choices provided
A
B
C
D
To get maximum power from a given voltage, the amount of current and voltage needed to juggle in a circuit. So, the correct option is (D).
What is Voltage?Voltage is also called electric pressure, electric tension or potential difference which can be defined as the difference in electric potential between two points. In a static electric field, it describes the work required per unit charge to move a test charge between two points.
To maintain a certain amount of current passing through a circuit the voltage of a circuit is changed which is directly proportional to the current. Lowering the voltage will reduce the flow of current, when we assume that the resistance of the circuit remains the same depending on the demand the voltage changes and the current automatically changes.
Thus, to get maximum power from a given voltage, the amount of current and voltage needed to juggle in a circuit. So, the correct option is (D).
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List 2 positive consequence of natural resource use/consumption
Answer:
In short, raw material extraction and processing always impact on the environment, resulting as they do in soil degradation, water shortages, biodiversity loss, damage to ecosystem functions and global warming exacerbation
Explanation:
Production is the creation, consumption is the use or destruction of resources and fuels
Please help! best answer gets brainliest
Answer:
help with what ? theres nothing there
How do the wavelength and frequency of the colors change as you move through the rainbow?
Answer:
he more energy is used for one photon, the smaller the wavelength of light. Since frequency is inversely proportional to wavelength you can also say: The more energy is used for one photon, the higher the frequency of light.
Explanation:
Answer:
As you move through the rain bow, wavelength reduces as frequency increases from red to violet.
Suppose you want to produce a plant cultivar that has red flowers and speckled leaves. You have 2 cultivars, each having 1 of the desired traits. How would you proceed?
In desired traits, by breeding these two types of plants we will get a hybrid plant with the desired traits: red flowers and speckled leaves.
What do you mean by traits?A trait is a specific characteristic of an individual. Traits can be determined by genes, environmental factors or by a combination of both. Traits can be qualitative or quantitative.
Genes carry the information that determines your traits (say: trates), which are features or characteristics that are passed on to you — or inherited — from your parents. Each cell in the human body contains about 25,000 to 35,000 genes.
Biological traits describe species' physiology, morphology, life history, and behavior, capturing both inter-specific interactions and the connections between species and their environment.
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explain the cause of imperialism. make sure to discuss all 3 of the c and describe why they were cause of imperialism
Among industrialized nations, economic competitiveness. Competition on the political and military fronts, especially the development of a powerful navy.
What is imperialism?A conviction that those of Anglo-Saxon ancestry are better on both a genetic and cultural level.
The rise of imperial authority and patriotism were the political causes of imperialism. They sought to exert as much power over the world as they could. The size of the country increased with the number of colonies.
Therefore, they searched for key areas where their ships and armies could have access from anywhere in the world.
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question what was the name of the gene that was affected by this condition . Tell the function of this gene-what does it code for be very specific
The gene affected by this condition is known as the KCNH2 gene. This gene is located on the long arm of chromosome 7 and encodes a voltage-gated potassium channel.
The voltage-gated potassium channel is an integral membrane protein that is responsible for controlling the flow of potassium ions into and out of cells.
The KCNH2 gene is important for the normal functioning of cells in the body. It is essential for the maintenance of the resting membrane potential by regulating the flow of potassium ions. It is also involved in mediating the electrical activity of the heart and plays a critical role in cardiac repolarization. Mutations in the KCNH2 gene can lead to a variety of cardiac arrhythmias and other cardiac conditions, including long QT syndrome.
Long QT syndrome is a genetic disorder that affects the electrical activity of the heart and can cause syncope, cardiac arrest, and even sudden death. The KCNH2 gene is one of the genes that has been linked to this disorder. Mutations in this gene affect the normal functioning of the voltage-gated potassium channel, which can lead to a prolonged QT interval on an electrocardiogram (ECG). This can result in an increased risk of life-threatening arrhythmias and cardiac arrest.
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Explain why the process of cell differentiation occurs.
Answer: Cell differentiation is how generic embryonic cells become specialized cells. This occurs through a process called gene expression. Gene expression occurs because of certain signals in your body, both inside and outside of your cells. Cell differentiation occurs during multiple stages of development.
Answer:
this goes by cell size cell shape,membrane potential and metabolic activity. these changes are actually because of modifications in gene expression
When describing DNA replication we say that DNA polymerase synthesizes the new strand in a 5' to 3' direction, moving down the template strand from 3' to 5'. Briefly explain why replication always proceeds in this direction
DNA replication occurs in a 5' to 3' direction because the enzymes used for replication, known as DNA polymerases, can only add nucleotides to the 3' end of an existing strand of DNA.
This is because the 3' end has an exposed hydroxyl (-OH) group which can be used to add to the growing strand of nucleotides. As such, the polymerase moves down the template strand from 3' to 5', adding new nucleotides in the 5' to 3' direction.
This ensures that the newly synthesised strand is complementary to the template strand, as newly added nucleotides are added in the same direction as the original strand.
Additionally, this directional synthesis also means that both strands of the DNA double helix can be synthesised simultaneously, with each strand serving as the template for the other. This ensures that the complete DNA molecule is correctly replicated in the same manner as the original strand.
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what is binomial nomenclature?
Answer:
In taxonomy, binomial nomenclature ("two-term naming system"), also called binominal nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (which may be shortened to just "binomial"), a binomen, binominal name or a scientific name; more informally it is also called a Latin name.
Answer:
Explanation : the system of nomenclature in which two terms are used to denote a species of living organism, the first one indicating the genus and the second the specific epithet
Which of the following are benefits of biodiversity within ecosystems? Choose all correct answers.
Ecosystems with higher biodiversity have less human threats.
Ecosystems with higher biodiversity are better protected from pollution.
Ecosystems with higher biodiversity are more likely to recover from environmental stressors.
Ecosystems with higher biodiversity can better protect against coastal flooding.
The benefit of biodiversity within ecosystems is ecosystems with higher biodiversity are more likely to recover from environmental stressors. The correct option is c.
What is an ecosystem?An ecosystem is a region where a bubble of life is created by plants, animals, and other organisms interacting with the weather, environment, and other factors. Abiotic variables, or nonliving components, coexist with biotic components in ecosystems.
Environmental stressors are things that can prevent ecosystems from developing or limit the productivity and reproduction of species. Fishing will be impacted by climate change, which will have an impact on many species and habitats.
Therefore, the correct option is c. Ecosystems with higher biodiversity are more likely to recover from environmental stressors.
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19. Discuss Choose one of the hypotheses about
the function of the shark's head shape. Describe
how a scientist might design an experiment to
test the hypothesis,
Answer:
This unique head shape has been termed the cephalofoil in recognition of its wing-like appearance. ... Some suggest the cephalofoil acts like a canard to provide hydrodynamic lift and increase maneuvering capabilities. Another hypothesis is that the cephalofoil functions in prey manipulation.
Explanation:
ILL GIVE BRAINLIEST JUST TO LET YOU KNOW ASAP
What is the relationship between tissues and organs?
• Scientists find life on Mars that is not made of cells.
• Scientists identify a cell organelle that practices the process of photosynthesis.
• Scientists determine that an organism is living if it is made of twenty structurally-identical cells.
• Scientists gather life from a volcano that is composed of cells which are very different from humans.
Answer:
Tissues and Organs? Cells are the basic building blocks of life, which can join together to form tissues, while different groups of tissues join together to form organs.
Explanation:
How is local humidity influenced by a flow of energy and the movement of matter in the form of water?
Answer: Evaporation!
Explanation:
One way in which energy can influence local humidity is through the process of evaporation. When energy is added to water, it can cause the molecules to vibrate more rapidly, which can eventually cause them to break free from the surface and turn into a gas. This process, called evaporation, can increase the amount of water vapor in the air, leading to higher humidity.
Answer:
The local humidity is influenced by the flow of energy and the movement of water in the air because these factors determine the amount of water vapor that the air can hold. The amount of water vapor that air can hold is directly related to its temperature - as the air temperature increases, the air can hold more water vapor. When the air is already saturated with water vapor, any additional moisture will condense into visible droplets, such as dew or fog. This process is known as condensation.
The movement of water in the air can also affect local humidity. If moist air moves into an area, it can increase the humidity in that area. Conversely, if dry air moves into an area, it can decrease the humidity. The movement of water in the air can be caused by a variety of factors, including differences in temperature and pressure, the presence of physical barriers, and the force of the wind.
Explanation: