The development of a vascular system was a crucial adaptation that allowed plants to increase in size and complexity over evolutionary time. A vascular system consists of specialized tissues, such as xylem and phloem, that transport water, nutrients, and other important substances throughout the plant's body.
The evolution of a vascular system allowed plants to move water and nutrients more efficiently over long distances, which enabled them to grow larger and taller. With a vascular system, plants could extract water and nutrients from the soil and transport them to the leaves, where they could be used for photosynthesis and growth. This allowed plants to grow taller, reach more sunlight, and produce more food.
Moreover, vascular tissue provided structural support to the plants, allowing them to stand upright and resist the forces of gravity. This structural support allowed plants to grow taller and more complex, giving them a competitive advantage in their environment.
Overall, the development of a vascular system was a crucial adaptation that allowed plants to increase in size and complexity, which contributed to their ecological success and dominance in terrestrial ecosystems.
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Which of the following explains why artificial selection is described as artificial?
It is the opposite of natural selection, in which organisms adapt to their environments without human intervention.
It alludes to the process of artificial insemination, a process of unnaturally planting a fertilized egg.
It deals with synthetic or superficial genes and traits like color, markings, size, and speed.
It is the label used to show which animals have been given hormones and artificially-made nutrients.
Answer:Likely option 1
Explanation:Natural selection is selects for individuals with traits of increased relative fitness (fitness= ability to produce viable offspring) Artificial selection is when people select for a desired trait.
None of the choices above are great...
first option: likely the best choice by process of elimination
second option: Artificial selection doesnt necessarily have to involve artificial insemination, though it can
3rd option: traits like color, markings, size and speed are not generally superficial... traits of color, markings and physical fitness (size/speed) often increase fitness in regards to sexual selection
The final option is simply false
As you know bone marrow makes red blood cells, white blood cells and platelets and as you grow it begins to store fat. What do you think a bone marrow transplant will allow the recipient to do?
short explanation thx
Answer:
A bone marrow transplant allows the recipient to receive healthy bone marrow from a donor. This can be life-saving for people with certain types of cancer, genetic disorders, or other conditions that affect the bone marrow's ability to produce blood cells. The transplanted bone marrow can restore the recipient's ability to produce healthy blood cells and improve their overall health and quality of life.
Why don’t plants need excretory organs
Answer:
Plants absorb essential nutrients from the soil, hence they lack excretory organs. Particulate matter is not taken as these lack mouths.
Explanation:
Organisms like animals have an advanced and specialized system for excretion. But plants lack a well-developed excretory system like that in animals. They do not have special organs for excretion. Thus, excretion in plants is not so complex.
A forest fire destroyed many plants in a forest. Some plants survived. The process that will allow the population of these plants to increase is
Natural selection is the process that causes the population of surviving plants to grow following a forest fire. Plants that survive with beneficial features have a survival advantage and can transmit these traits on to the following generation, increasing the population.
How are plants able to endure after a fire?Because of a smart layer of thermal insulation produced by their bark, dead leaves, or moist tissues, some plants can withstand flames.
How are plants impacted by forest fires?In addition, fire can burn and harm vegetation communities, such as rainforests, whose recovery might take hundreds of years. specific plants or animals are killed or hurt. cause marshes and waterways to erode, which in turn causes sedimentation.
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recall the original source of energy for all ecosystems of organism on earth
Answer:
3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.
Explanation:
have a nice day.
Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles in a population. One source of variation is mutation. Consider the choices below. Which of the following would NOT be a source of increased genetic variation in a population?
a. immigration into the gene pool
b. random mating between organisms
c. crossing over during meiosis
d. geographic isolation
Answer:
D
Explanation:
Isolation would not cause any genetic variation. When the population doesn't have interactions with other populations, there is a lower chance of mutation occuring.
Based on the cell theory, which of the following is true?
Large organisms have fewer cells than small organisms.
Small organisms have smaller cells than large organisms.
All living things are made of more than one cell.
New cells are produced from old cells
Answer:
New cells are produced from old cells
Explanation:
According to cell theory, which is a scientific theory first formulated in the mid-nineteenth century, organisms are made up of cells, they are the basic structural/organizational unit of all organisms, and all cells come from pre-existing cells¹. So, out of the options you provided, the statement that is true according to cell theory is: "New cells are produced from old cells."
Source: Conversation with Bing, 4/27/2023
(1) Cell theory - Wikipedia. https://en.wikipedia.org/wiki/Cell_theory.
(2) Cell theory | Definition, History, Importance, Scientists, First .... https://www.britannica.com/science/cell-theory.
(3) Cell Theory - National Geographic Society. https://www.nationalgeographic.org/encyclopedia/cell-theory/.
why did the fox population take a year to decrease if the hares are their prey and decreased?
Answer:
Prey leads predators
Explanation:
if the prey goes up predators goes up
if the prey goes down predators go down this is because with a small amount of prey the predators have less to eat and die off but of there is a lot then exponential growth happens with the predators until the prey goes down creating a loop
Compare and contrast the function of organs and other physical structures of plants and animals.
PARAGRAPH EXPLANATION PLEASE
Animals and plants have completely distinct body structures and metabolic processes.
Animals have a layer of skin, while plants have a waxy outer covering. Water and nutrients are moved throughout the structures of plants. Animals transmit blood containing oxygen, nutrients, and waste products through arteries, veins, and capillaries. Animals have five senses: eyes, ears, noses, and tongues.
Photosynthesis and reproduction are just two of the many tasks performed by this system. The organ systems of plants collaborate to form the structure and functionality of the entire organism, just like those of animals.
Animals have a large number of distinctive and specialised organs, whereas plants only have leaves, stems, and roots as organs.
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can someone help me with this problem?
Scenario the island kingdom viti levu had a rat problem. How would you describe changes in the rat population over time by reffering to the actions of slow changing and fast changing variables
In the case of the rat problem on the island kingdom of Viti Levu, we can describe changes in the rat population over time by referring to the actions of slow-changing and fast-changing variables.
What is the rat problem?Long-term and rather slowly fluctuating variables have an impact on the rat population. Examples of slow-changing variables in this environment include the temperature of the island, the appearance of new predator species, or changes in land use that affect the amount of food and shelter available to the rats.
Although these slow-changing elements might not have an immediate impact on the rat population, they could have a significant one in the long run.
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Will give brainliest. I need help with this project please!
For this activity, you will design and describe a new outer planet. You must answer a series of questions and describe your planet in detail. Once all questions have been answered, you will create a scientific journal entry from the point of view of another astronomer discovering your planet. This journal entry must include all of the answers to the questions, but should be written as if these details are being discovered for the first time.
1. How many AU is your planet from the Sun?
2. Does your planet have a solid surface or is it a gas giant? If it has a solid surface, give the details.
3. Describe the atmosphere.
4. Describe the color(s).
5. Does your planet have rings? If so, are they massive like Saturn’s or almost unnoticeable like Jupiter’s?
6. Does your planet have any moon? If so, how many?
7. How many degrees does your planet tilt?
8. What is the diameter of your planet (in miles)?
9. How long is one full rotation of your planet? (in minutes, hours, Earth days, or Earth years)?
10. How long does it take for your planet to complete an orbit around the Sun (in Earth years)?
Step 2: Write a Scientific Journal Entry
Now it’s time to “discover” your planet! Use your answers to the questions in Step 1 to help you describe the planet in detail. They do not have to be described in the same order as the questions were listed; they can be mixed up to reflect how an astronomer might slowly learn about a planet’s components and aspects. As this journal entry is written from the point of view of the “discoverer” of the planet, you must include the name of the planet and explain why you chose that name. Your journal entry must be at least two paragraphs long.
Your answers to the 10 questions (step 1)
Your journal entry describing your “discovery” (step 2)
You must include the name of your planet and explain why you chose that name
Your journal entry must be at least two paragraphs long
Answer:
1. My planet is located 15.6 AU from the Sun, making it one of the farthest planets in our solar system.
2. My planet is a gas giant, similar to Jupiter and Saturn. It has no solid surface, but rather a thick atmosphere that extends for thousands of kilometers.
3. The atmosphere of my planet is composed mostly of hydrogen and helium, with small amounts of methane, ammonia, and water vapor. The upper atmosphere is extremely cold, reaching temperatures as low as -200°C, while the lower atmosphere is warmer due to the pressure of the gases.
4. The color of my planet is a deep blue, similar to that of Neptune. This is due to the absorption of red light by methane in the atmosphere.
5. Yes, my planet has rings, but they are much smaller and fainter than Saturn's rings. They are made up of ice and dust particles and are only visible through powerful telescopes.
6. My planet has 27 moons, ranging in size from small irregularly shaped rocks to large, spherical objects like our Moon. The largest moon is named after the planet itself, and is called "Xolotl".
7. My planet has a tilt of 32 degrees, causing it to experience seasons similar to Earth.
8. The diameter of my planet is 90,000 miles, making it slightly larger than Jupiter.
9. One full rotation of my planet takes 10 hours and 45 minutes.
10. It takes my planet 165 Earth years to complete one orbit around the Sun.
Journal Entry:
Today, I am excited to announce the discovery of a new planet in our solar system, which I have named "Tlaloc". Tlaloc is a gas giant located 15.6 AU from the Sun, making it one of the farthest planets in our system. Its atmosphere is composed mostly of hydrogen and helium, with small amounts of methane, ammonia, and water vapor. The upper atmosphere is extremely cold, reaching temperatures as low as -200°C, while the lower atmosphere is warmer due to the pressure of the gases. One of the most striking features of Tlaloc is its deep blue color, caused by the absorption of red light by methane in the atmosphere. It also has a system of faint rings made up of ice and dust particles, and a total of 27 moons, the largest of which is named "Xolotl". With a diameter of 90,000 miles, Tlaloc is slightly larger than Jupiter and has a tilt of 32 degrees, causing it to experience seasons similar to Earth. It takes Tlaloc 165 Earth years to complete one orbit around the Sun, and one full rotation takes 10 hours and 45 minutes. I chose to name this planet Tlaloc after the Aztec god of rain and water, as I felt that the blue color of the planet and the presence of water vapor in its atmosphere were fitting of this name. Tlaloc is a fascinating planet that will undoubtedly provide a wealth of information for future studies, and I am excited to see what new discoveries will come from its exploration.
GIVING BRAINLIEST!! CHECK IMAGE BELOW TO HELP PLEASE :)
Phylogenetic trees are representations of the evolutionary relationship between groups. The common ancestor between A, B, and C is I.
What is a phylogenetic tree?
Phylogenetic trees are graphic representations that express the evolutive process through which several groups -taxa- emerged through history.
The phylogenetic tree is composed of
Root ⇒ It represents the oldest common ancestorNodes ⇒ Divergence point in which single taxa differentiate or diverge. These nodes are the most recent common ancestor of the new diverging groups.Branches ⇒ The extremes of branches represent taxonomic groups or lineages.All the taxa in the tree share a far common ancestor. New traits emerge through history that drives the evolution of new lineages. These traits might be either morphological or molecular.
Two taxonomic groups are more related if they have a recent common ancestor. There are fewer differences (morphological or molecular) between these two groups.
On the other hand, two lineages will be less related if their common ancestor is not a recent one and is located far away in the tree. Several differences exist between these groups because many changes occurred in the middle.
Two groups are homologous when they have a common recent ancestor, even when one of the groups evolved into new groups later in time.
In the exposed tree, the common ancestor between A, B, and C is I. Look at the red line in the attached image.
B and C have a recent common ancestor which is F. A and D have a common ancestor which is E.The oldest common ancestor of all the lineages in the tree is I.You can learn more about phylogenetic trees at
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What other process can you think of that is similar to the journey of a signal through the neuron?
The process that is similar to the journey of a signal through the neuron is is how the information is been transimitted through an electrical wire.
How do you think a signal travels from one neuron to another?When there is communication between the neurons, the neurotransmitters from one neuron are released, and this help to attched tothemselves to special molecules which is regarded asthe receptors.
It shuld be noted that the Receptors receive as well as process the message which is nee sent to the available next neuron. howeve rthe Synaptic transmission srves as one at the synapses by which a chemical signal is released this is the same as transimiision of electric between wires.
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What are Punnett squares used to determine?
A
Possibility of a mother having twins
B
Probability of a trait being passed on to offspring
C
Mutation rate in a population
D
Number of genes that code for a trait
Answer:B
Explanation: Punnet sqaures are used to find the ratio between possible genotypes(possible allele combinations) in a cross; whether a trait is passed to offspring depends on it's genotype resultant from the cross, and the dominant/recessive relationship between the alleles. (cross=mating event, genotype= genetic makeup)
Answer:
B
EXPLANATION: punnett squares are used to determine possiblity of a trait being passed on to offspring
Select all of the choices below that are true about the structure of lipids
From which direction would weather come to a city at 65-degrees north?
Weather in the northern hemisphere comes in the west to east direction.
The weather is affected mainly by the type of wind and the energy radiated by the earth in that region.
The rotation of the earth and Coriolis force affect the direction of a wind, making it flow in the counterclockwise direction.
Thus, the wind flows from the subtropic belt to the sub-polar belt, in the west to east direction. Such winds are known as the westerlies.
Energy that is absorbed by the earth's surface is radiated back into the atmosphere. Due to the rotation and revolution of the earth, there is a variation in the energy absorbed and given back. This also contributes to the weather of an area.
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genetic inheritance life siences grade 12
How would you expect a Species Survival Plan to affect the crested toad
population in Puerto Rico?
A. It would lead to the extinction of crested toads due to water
pollution.
B. It would lead to the successful reintroduction of crested toads into
the wild.
OC. It would cause most crested toads to die due to invasive species.
D. It would cause the death of some crested toads due to habitat
loss.
It would lead to the successful reintroduction of crested toads into the wild. The correct option is B
What is Species Survival Plan ?
A Species Survival Plan (SSP) is a program designed to manage and conserve the genetic diversity of endangered or threatened species in captivity.
Therefore, Option B, "It would lead to the successful reintroduction of crested toads into the wild," is the most likely outcome of a Species Survival Plan for the crested toad population in Puerto Rico. While there may be challenges such as invasive species and habitat loss that could impact the success of the reintroduction efforts, the goal of the SSP is to help increase the population of the crested toad and prevent their extinction.
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Are the following statements a form of Active or Passive Transport?
Gas moves from one corner of a room to be evenly distributed across the whole room
Chlorine Ions are moved from an area of low concentration to high concentration
No ATP is used for transport
Passive Transport
Energy is used
Water moves from an area of low concentration to high concentration
Carrier proteins allow large molecules to move down their concentration gradient
Glucose is allowed to come into the cell with sodium after the cell has used energy to push sodium outside
Gas moves from one corner of a room to be evenly distributed across the whole room - Passive Transport
Chlorine Ions are moved from an area of low concentration to high concentration - Active Transport
No ATP is used for transport - Passive Transport
Water moves from an area of low concentration to high concentration - Passive Transport
Carrier proteins allow large molecules to move down their concentration gradient - Passive Transport
Glucose is allowed to come into the cell with sodium after the cell has used energy to push sodium outside - Secondary Active Transport (also known as Coupled Transport)
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pls help (earth science)
The sedimentary bedrock in both regions originally formed as (1) horizontal layers
It should be noted that layer A is the oldest and layer D is the youngest.
The recently formed rock is siltstone.
How to explain the rocksThe principle of superposition can be utilized to determine the sequential ages of layers. According to this concept, in any succession of unaltered sedimentary rock strata, the oldest layer is situated at the bottom, while the youngest layer rests at the apex.
From investigation of the representation, layer A can be observed to lie at the bottom and layer D positioned at its peak; with layers B and C crammed between. Reciprocally, layer A can be concluded as being the eldest, whilst layer D being the most modernizing. The response, thusly, must be option (1) A.
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8.
gases in the atmosphere,
including
maintain surface air temperature.
anola. Condensed, nitrogen
b. Greenhouse, water vapor
trap radiated heat and help
c. Flammable, carbon dioxide
d. Inert, oxygen
Answer:
Explanation:b cause its a non verbal. answer for the asset.
is this correct i need this answered asap
The position of the earth that represents summer in the Northern Hemisphere is Position 2.
The three factors that affect seasons are:
Tilt of the Earth's axisRevolution of the Earth around the sunLatitudeWhat are the factors that determine seasons?The factors that determine seasons include the following:
Tilt of the Earth's axisRevolution of the Earth around the sunLatitudeThe tilt of the Earth's axis causes the amount of sunlight received by different parts of the Earth to differ throughout the year, resulting in the four seasons.
The Revolution of the Earth around the sun causes the Earth's distance from the sun to vary, thus affecting the seasons.
The latitude of a location on the Earth's surface determines the amount of solar radiation that is absorbed by the Earth's surface, thus determining the temperature and seasons.
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Your teacher says that stable ecosystems stay relatively
constant until changing conditions result in a new
ecosystem.
Which statement supports this claim?
OA. Populations in a stable ecosystem are constantly changing in size
until new conditions make them permanent.
OB. Populations in an ecosystem are constantly changing until they
are made stable by changing conditions.
OC. Populations in a stable ecosystem stay exactly the same until they
are made unstable.
D. Populations in a stable ecosystem maintain their size until new
conditions no longer support them.
Stable ecosystems stay relatively constant until changing conditions result in a new
ecosystem. Hence option d supports this claim.
Even with variations, the population size in an ecosystem tends to remain pretty consistent. However, a few factors will have an impact on the population sizes shown in the table below. Growth depends on factors including temperature, pH, and mineral nutrients.
Resilience and resistance are the two main factors that contribute to ecological stability. The capacity of an ecosystem to maintain stability in the face of a disruption is known as resistance. The rate of an ecosystem's recovery following a disruption is known as resilience.
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The process of bulk flow transports fluids in a plant. Describe the two main bulk flow processes
Answer:
Two main types of bulk-flow transports are; transpiration and translocation
Explanation:
In general, translocation is a bidirectional transportation process whereas transpiration is a unidirectional mechanism.
Succinylcholine acts as a depolarizing agent that prevents repolarization of the nerve. Therefore, no further ACh is released until the drug is cleared. Name another site within the neuromuscular junction that might be affected to prevent muscle contraction. (Hint: curare acts by this mechanism.)
The site within the neuromuscular junction that might be affected to prevent muscle contraction is known as the nicotinic acetylcholine receptor.
What is the neuromuscular junction?
The neuromuscular junction (NMJ) is described as a synaptic connection between the terminal end of a motor nerve and a muscle (skeletal/ smooth/ cardiac).
The neuromuscular junction is known as the site for the transmission of action potential from nerve to the muscle.
Curare is known as a drug that acts as a non-depolarizing neuromuscular blocking agent by blocking the nicotinic acetylcholine receptors (nAChRs) at the motor end plate of the neuromuscular junction.
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If samples of nerve cells and bone cells from the same person were run through the same type of microarray, would the results differ? Explain.
Math help me please it will help me
HELP ME PLEASE I NEED THIS Write in complete sentences to explain what a budget is, how to make one, and how to balance it
(No passage)
Answer: A budget is a financial plan that outlines expected income and expenses for a specific period of time. To make a budget, you need to list all sources of income and all expenses, including fixed expenses such as rent or mortgage payments and variable expenses such as groceries and entertainment. Once you have listed all income and expenses, you can calculate the difference between the two to determine if you have a surplus or deficit.
To balance a budget, you need to ensure that your expenses do not exceed your income. If you have a surplus, you can allocate the extra money towards savings or paying off debt. If you have a deficit, you will need to find ways to reduce your expenses or increase your income to balance your budget. This can be done by cutting back on discretionary spending, finding ways to save on necessary expenses, or finding additional sources of income.
Explanation:
Which of the following is not a suggested strategy for detecting a communicable disease?
Get tested at a doctor's office for suspected infectious disease.
Investigate the source of exposure to a communicable disease.
OUse a pedigree chart to track the disease through family members.
OUse contact tracing to detect a disease moving through a community.
The suggested strategy for detecting a communicable disease that is NOT accurate is: Use a pedigree chart to track the disease through family members.
What are the communicable disease?While a pedigree chart can be useful in understanding the inheritance of genetic diseases, it is not a recommended strategy for detecting a communicable disease.
Therefore, The other options mentioned in the question (getting tested at a doctor's office for suspected infectious disease, investigating the source of exposure to a communicable disease, and using contact tracing to detect a disease moving through a community) are all valid strategies for detecting and controlling the spread of communicable diseases.
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