Answer:
The classification is subjected to change due to the increase in scientific knowledge with time.
As scientists make novel discoveries, the grouping of organisms changes according to it. For example, at the time of Aristotle, the scientific knowledge was not much advanced. Hence, at that time organisms were simply classified as plants and animals.
With the passage of time, as scientists learn and discover, the scientific classification changes based on these new studies.
Classification is subject to change based on our evolving understanding of organisms and genetic relationships. The shift from the 5 kingdom system to the 6 kingdom system is an example of classification changes.
Explanation:Classification is subject to change because it is based on our understanding and knowledge of organisms, which is constantly evolving. As new discoveries are made and technology improves, scientists may reevaluate and revise the classification system. For example, the shift from the 5 kingdom system to the 6 kingdom system was made to reflect our better understanding of the genetic relationships between organisms.
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Study the image.
Global winds. Blue arrows designate cool air. Red arrows designate warm air. Cool air moves from the South and North Poles toward 30 degrees latitude. Warm air moves from 30 degrees latitude toward the equator.
Which statement best describes what the arrows represent?
A. Air continuously blows away from the equator.
B. Air flows in different directions over long distances.
C. Air moves from regions of low pressure to high pressure.
D. Air circulates in an upward direction, creating surface winds.
Answer: B ) Air flows in different directions over long distances
The statement that best describes what the arrows represent is that the Air flows in different directions over long distances. Thus, the correct option for this question is B.
What is the significance of air?The significance of air is determined by the fact that it is the most important component for the survival of life on Earth. We breathe in air. The oxygen present in the air is required for the respiration of living beings.
According to the image, blue arrows designate cool air. Red arrows designate warm air. Cool air moves from the South and North Poles toward 30 degrees latitude. Warm air moves from 30 degrees latitude toward the equator. So, the arrow significantly describes the flows in different directions over long distances.
Therefore, the statement that best describes what the arrows represent is that the Air flows in different directions over long distances. Thus, the correct option for this question is B.
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How does replication ensure that cells have complete sets of DNA
Answer:
Explanation:
During replication a new strand of DNA is synthesized when the other strand is a template to guide the process. Every time the order of the bases in preserved so that DNA can be accurately replicated over and over with identical genetic information.
This phylogenic tree is composed based on molecular data (rRNA). What statements can we infer are true about the organisms throughout the tree?
options:
Because the tree is rooted, all branches share a common ancestor.
All organisms have some sort of cellular structure/organization.
All Eukaryotes evolved from Bacteria.
Since the organisms contain RNA, they share the same DNA.
If the organisms contain RNA, the share the same four nitrogen bases.
Answer:
Because the tree is rooted, all branches share a common ancestor.
All organisms have some sort of cellular structure/organization.
If the organisms contain RNA, they share the same four nitrogen bases.
Explanation:
The tree is rooted means that they are sharing common ancestor of all the species which are present in the phylogenetic tree, it shows the evolutionary relationships between the groups of species.
The level of organization is found in an organism that is organized from the small form to the large form such as organelle form cells, cells form tissues, tissues form organs, etc.
If the organisms contain RNA, they share the same four nitrogen bases because RNA contains these 4 nitrogenous bases: Adenine, Cytosine, Uracil, and Guanine.
Answer:
Because the tree is rooted, all branches share a common ancestor.
All organisms have some sort of cellular structure/organization.
If the organisms contain RNA, they share the same four nitrogen bases.
Explanation:
I did the USATestPrep
The primary cells that control the adaptive immune response are the lymphocytes, specifically the T and B-cells. T-cells play several important roles in the adaptive immune response. All BUT ONE describes a role of T-cells.
A) T-cells control B-cell immune responses in many cases.
B) T-cell clones expand in number and differentiate into plasma cells.
C) T-cells secretes cytokines that regulate the development of a variety of cells.
D) T-cells recognize antigens with their antigen receptor a complex of two protein chains on their surface.
Answer:
B
Explanation:
I just finished USATESTPREP please give me brainleast.
Answer:
T-cell clones expand in number and differentiate into plasma cells.
Question 8
The dumping of partially treated sewage into a body of water would most likely lead to pollution by which of the following?
PLEASE HELP
Answer:
run off
Explanation:
sewers eventualy go to lakes or oceans
Read the passage below. It summarizes survey information.
The Global Youth Tobacco Survey asks youth to fill in the answers to several questions about their tobacco use. In
this survey conducted between 2000 and 2007, it was found that in youth ages 13-15, 12 percent of boys and 7
percent of girls reported smoking cigarettes. This information was shared and reported on the American Cancer
Society website. The information was then used by several industries in the fields of health care, insurance, and
education.
What is a reason that these data may be unreliable?
Answer:
It is from a self-reporting survey, and teens may not want to answer the questions honestly.
Explanation:
Just got it right.
It is from a self-reporting survey, and teens may not want to answer the questions honestly this is the reason that these data may be unreliable. The correct option is D.
What is survey information?A survey was employed that collects data from either a predetermined group of individuals in order to gain insight and perspectives into a variety of topics of interest.
Survey evidence is described as the outcome information gathered from a sample of survey respondents. This data is comprehensive intelligence collected from a specific target audience in order to conduct research.
A survey can be used to investigate a group of people's character traits, behaviors, or opinions. These research tools can be used to inquire about demographic information such as gender, religion, ethnicity, and income.
It is from a self-reporting survey, and teens may not want to answer the questions honestly, so this data may be inaccurate.
Thus, the correct option is D.
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Your question seems incomplete, the missing options could be:
It is information that is too new to be considered factual.It was found on the American Cancer Society website, and websites are unreliable.It is information that is used for a variety of purposes and not just gathered for research.It is from a self-reporting survey, and teens may not want to answer the questions honestly.Which of the following statements is true the matter in an ecosystem must be continuously replenished the total amount of energy and ecosystem remains the same the only way to return matter to the soil decomposition or the total amount of water in an ecosystem is always decreasing
Answer: The total amount of energy in an ecosystem remains the same
Hope this helped !
Explanation:
Answer:
flows only one way
Explanation:
Wildlife corridors are areas where wildlife can travel between two natural areas that are separated by urban development, such as highways. The development of wildlife corridors is an attempt to decrease the effect of which factor? A) Limited shelter B) Excess predators C) Excess water D) Limited Space
The development of wildlife corridors is an attempt to decrease the effect of Limited Space. The correct option is D.
What is wildlife corridor?Wildlife corridors are narrow strips of land that differ from the surrounding area, usually in terms of dominant vegetation.
They provide important sources of food and cover for many species and serve as travel corridors for wildlife species between two similar but fragmented habitat areas.
Biodiversity corridors seem to be vegetated areas that allow the movement of animals through one patch of native forest towards something else.
By mimicking the structure and diversity of native vegetation, a corridor provides shelter, food, and protection from predators.
The creation of wildlife corridors is an attempt to mitigate the impact of Limited Space.
Thus, the correct option is D.
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How do bacteria differ, and what is happening to the bacteria when they are exposed to antibiotics in their environment?
Answer:
When a bacteria is exposed to antibiotics there are three possible outcomes - they will die, they will stagnate (not multiply), or they will multiply. Three main factors will predict which is more likely to happen; antibiotic concentration, bacterial mutation, and bacterial genetic exchange.
Explanation:
Experiment: Click Reset. Try making other changes to the ecosystem. Use the + or – buttons, or choose Diseased from the dropdown lists. Click Play and observe for at least 12 months. Record what happens below.
______
Summarize: Give at least one example of each of the following:
A major disturbance that the ecosystem was able to recover completely from.
A major disturbance that caused the ecosystem to collapse entirely, was when the snakes and the grass became diseased.
A major disturbance that caused the ecosystem to stabilize at a new equilibrium.
When there was an increase in the snakes and hawks.
A major disturbance that caused the ecosystem to completely collapse.
Having a population of grass that is diseased.
A major disturbance that almost caused a total collapse, but that the ecosystem was able to recover from eventually.
___________________________________________________________________
Answer:
A major disturbance that the ecosystem was able to recover completely from the grasses which is diseased.
Explanation:
If the grasses were diseased, the ecosystem will recover itself from this type of disturbance. If the population of snakes and hawks increases so the ecosystem will recover itself from this disturbance because snakes are the food of hawks so if the population of snakes increases so more food is available for hawks in the form of snakes and that's why population of hawks also increases and the population of snakes is controlled.
The disease outbreak among the trees, the ecosystem rebounded as new, disease-resistant tree variants grew and replaced the affected ones When the snakes and the grass became diseased, the ecosystem collapsed, as these key components couldn't support the food chain.
During the experiment, various changes were made to the ecosystem, leading to different outcomes:
A major disturbance that the ecosystem was able to recover completely from:
After an initial disturbance, where the trees experienced a disease outbreak, the ecosystem managed to recover entirely.
Over time, the tree population gradually shifted towards disease-resistant variants, leading to a balanced and healthy tree community that eventually restored the ecosystem's equilibrium.
A major disturbance that caused the ecosystem to collapse entirely:
The ecosystem suffered a catastrophic collapse when both the snake and grass populations became diseased.
Snakes play a crucial role in maintaining the herbivore population, and the grass serves as the primary food source for herbivores.
With these key components failing, the entire food chain collapsed, leading to an irreversible loss of biodiversity and ecosystem function.
A major disturbance that caused the ecosystem to stabilize at a new equilibrium:
An increase in the snake and hawk populations disrupted the ecosystem's balance initially.
However, after a period of adjustment, the predator-prey relationship reached a new equilibrium.
The increase in snakes led to reduced herbivore numbers, which, in turn, impacted the grass population.
This new balance ultimately stabilized, with snakes and hawks coexisting in harmony with their prey.
A major disturbance that caused the ecosystem to completely collapse:
The ecosystem suffered a catastrophic collapse when the grass population became diseased.
As grass serves as the foundation of the food chain, its deterioration led to the collapse of herbivores, predators, and ultimately the entire ecosystem.
A major disturbance that almost caused a total collapse but eventually recovered:
Initially, a reduction in herbivores nearly caused a collapse by impacting the grass population.
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what occasion transforms the salt plan landscape
Answer:
Salt Flat Landscape Creates the World's Largest Mirror. In Bolivia, the Salar de Uyuni, the world's biggest salt flat, transforms into a natural wonder during late summer rains.
Explanation:
Answer:
i dont know what but i just want 5 points
Explanation:
why do the plants in an area determine the organisms that can live in tha area?
Answer:
Organisms depend on other organisms and on the nonliving things in an ecosystem to meet their basic needs for food, water and protection. ... Plants use energy from the sun to produce their own food from air and water. The type of soil, amount of water and temperature range in an area determine the plants that grow there.
Plants are primary producers that sustain the food chain and therefore they are fundamental for a given ecosystem.
What are primary producers?The primary producers are organisms such as plants and algae that are able to generate their own food.
These organisms (primary producers) generate their own food by a process called photosynthesis.In conclusion, plants are primary producers that sustain the food chain and therefore they are fundamental for a given ecosystem.
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The process in which a solid changes to a liquid is called
Answer:
melting
Explanation:
the solid melts into a liqiud
Answer: Melting
Explanation:
The solid is heated to become a liquid.
what is causing the bee population to decline?
Answer:
The main reasons for global bees-decline are industrial agriculture, parasites/pathogens and climate change. The loss of biodiversity, destruction of habitat and lack of forage due to monocultures and bee-killing pesticides are particular threats for honeybees and wild pollinators.
Explanation:
Bee populations are decreasing due to pesticides, habitat loss, parasites, viruses, and climate change.
The decline in bee populations can be attributed to a combination of factors including the use of pesticides, habitat loss, parasites such as the Varroa mite and the Nosema gut parasite, viruses like the acute paralysis virus, and climate change. In North America, honey bee populations have been particularly affected by a phenomenon called colony collapse disorder, which leads to significant losses of colonies, but the exact cause of this disorder remains under investigation. The loss of bees and other pollinators poses a serious risk to the production of many crops that rely on pollination.
The information in the diagram BEST supports which hypothesis?
A) The fossil in layer C is preserved in igneous rock.
B) The fossil in layer C is preserved in metamorphic rock.
C) The fossil in layer C is older than the fossil in layer D.
D) The fossil organism in layer C is more complex than the fossil organism in layer D.
Answer:
c
Explanation:
it is older because it was buried deeper than the fossil in layer d
Answer:
C.
Explanation:
The older a fossil is, the deeper into the ground it grows because over time it gets more build up over it and begins to get covered up by erosion.
A space probe lands on a planet with 1/2 the gravitational force as the earth. What happens
to the mass and weight of the space probe?
Final answer:
The mass of the space probe remains the same, but its weight will decrease on a planet with 1/2 the gravitational force as Earth.
Explanation:
When a space probe lands on a planet with 1/2 the gravitational force as the earth, the mass of the space probe remains the same. Mass is a measure of the amount of matter in an object, and it does not change with the gravitational force.
However, the weight of the space probe will be different. Weight is the force exerted on an object due to gravity. It is directly proportional to mass and the strength of the gravitational force. Since the gravitational force on the new planet is 1/2 of that on Earth, the weight of the space probe will also be 1/2 of what it was on Earth.
For example, if the space probe weighed 1000 N on Earth, it would weigh 500 N on the new planet.
Which of the following depends on reproductive structures being compatible between partners in breeding
1. Gametic
2. Temporal
3. Mechanical
4. Behavioral
Answer:
Im pretty sure D
Explanation:
The correct answer is 3. Mechanical.
Mechanical isolation is a form of prezygotic reproductive isolation that occurs when two species cannot successfully mate due to differences in their reproductive structures or mating behaviors. This incompatibility prevents the transfer of gametes (sperm and eggs) between individuals of different species, thus acting as a barrier to gene flow.
Let's consider each of the options:
1. Gametic isolation: This type of reproductive isolation occurs when the gametes of two species are incompatible, meaning they cannot successfully fertilize each other. This is not about the compatibility of reproductive structures between partners but rather about the gametes themselves being incompatible after fertilization has been attempted.
2. Temporal isolation: This form of reproductive isolation happens when two species breed at different times, preventing the exchange of gametes. It is related to the timing of reproduction rather than the compatibility of reproductive structures.
3. Mechanical isolation: This is the correct answer. It involves the physical incompatibility of reproductive organs or structures between two species, which prevents successful mating. For example, the shape or size of the reproductive organs may not align properly, or the genitalia may be so different that copulation is not possible.
4. Behavioral isolation: This type of isolation occurs when the mating behaviors or rituals of two species are so different that they do not recognize each other as potential mates. This is more about the behaviors leading up to mating rather than the physical compatibility of reproductive structures.
Therefore, mechanical isolation is the type of reproductive isolation that depends on reproductive structures being compatible between partners in breeding.
Which cell has the highest rate of mitosis
Cells in the bone marrow and gastrointestinal tract typically have the highest rate of mitosis as they constantly need to replenish and replace cells. Examples include enterocytes in the small intestine and cells in the bone marrow producing new blood cells.
Explanation:The cells in our body that have the highest rate of mitosis are typically those in the bone marrow and gastrointestinal tract. These are cells that are constantly replenishing and replacing, which requires a rapid and steady rate of cell division, or mitosis. For instance, cells lining the small intestine, known as enterocytes, divide every 12 to 48 hours, which is incredibly frequent in biological terms. Similarly, the bone marrow, responsible for producing new blood cells, must undergo frequent mitosis to sustain this necessary output.
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The cell with the highest rate of mitosis is usually found in the growing tips of plant roots and in the blastula of whitefish. The process of mitosis involves four stages followed by cytokinesis, producing two daughter cells. However, the rate of mitosis changes depending on the needs of the organism.
Explanation:The cell type with the highest rate of mitosis is typically found in the growing tips of plant roots, as well as in the blastula stage of whitefish development. The proportion of cells undergoing mitosis in these regions is high because growth and development are rapid in these areas. Thus, the cell cycle progresses quickly.
Here's how it works: Once a cell has completed the interphase and is ready for cell division, it proceeds through four separate stages of mitosis - prophase, metaphase, anaphase, and telophase. This is followed by the division of the cytoplasm, called cytokinesis, which generates two daughter cells. This process takes place in all normally dividing cells of the body, except for the germ cells that produce eggs and sperm.
The rate of mitosis is closely coordinated with the needs of the organism. Thus, cells in regions of active growth, such as a root tip or a developing embryo, will have a higher rate of mitosis than other cells in the organism.
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Please choose the correct answer :)
The Spartans in ancient Greece had a form of government, known as a oligarchy.
What was the form of government used by Spartans?The government featured dual kings who shared power, a council of elders (Gerousia) responsible for proposing laws, an assembly of citizens (Apella) with limited decision-making authority, and five annually elected Ephors who oversaw day-to-day affairs and checked the power of the kings and the Gerousia.
This system leaned toward oligarchy, concentrating real political power in the hands of a small elite group of Spartan citizens. The government's primary focus was on maintaining a strong military and a highly structured social hierarchy, including a small class of full citizens while the majority of the population comprised non-citizens such as helots and perioikoi.
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Describe the main function of the following parts.
1. leaves
4. roots
2. stem
5. flowers
3. veins
6. petals
Answer:
Petal is brightly coloured and scented to attract pollinating insects
Leaf acts as food factory using the energy from sunlight
Roots carry water and nutrients from soil to the plants body and keeps it anchored in the ground
Veins are blood vessels that carries blood towards heart
Stems support for the elevation of leaves,flowers and fruits and also transport fluids between roots and shoots in xylem and phloem
Explanation:
which of the following is true about enzymes
Answer:
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. The enzyme active site is the location on the enzyme surface where substrates bind, and where the chemical reaction catalyzed by the enzyme occurs.
Which of the following is not an
effect of meiosis?
Causes more genetic diversity in sexually
A reproductive species.
Rrepuces the number of offspring affected
B by genetic mutations,
Censures the same number and types of
hones
in indi dua
ID due to vardability in individual strengths
et adual
o improves the chances
Answer:
Which of the following is not an effect of meiosis?
Causes more genetic diversity in sexually
Explanation:
Final answer:
Option B, which suggests that meiosis reduces the number of offspring affected by genetic mutations, is not an effect of meiosis. While meiosis increases genetic diversity, it does not inherently reduce the prevalence of mutations in offspring.
Explanation:
The question asks about the effects of meiosis and which of the given options is not an effect of this process.
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells, each with half the number of chromosomes of the original cell. Genetic diversity is one of the key results of meiosis, as it brings together chromosomes from each parent through sexual reproduction. This diversity is achieved through mechanisms like crossing-over, the independent assortment of chromosomes, and random fertilization.
However, option B suggests that meiosis reduces the number of offspring affected by genetic mutations, which is not necessarily true. While meiosis can lead to the creation of new genetic combinations that may impact the prevalence of certain genetic traits, including mutations, this process does not inherently reduce the number of offspring affected by genetic mutations. Mutations may occur during meiosis as well as other stages of life, and their effect on offspring can range from neutral to harmful, or sometimes even beneficial.
Therefore, the option which is not an effect of meiosis is B: "Reduces the number of offspring affected by genetic mutations."
Explain why thermal energy storage capacity of water is important to life on earth I know
Answer:
A high specific heat of a substance means that a large amount of heat is required to raise the temperature of the substance. ... Water covers around 70% of the Earth's surface and its high specific heat plays a very important role as it is able to absorb a lot of heat without a significant rise in the temperature.
Answer:
give that guy brainliest what a good answer i respect that.
Explanation:
If Carbon Dioxide levels rise, then the temperature will __. Fill in the blank.
A Rise
B Lower
C Be The same
D Eventually rise
Answer: I think it will increase the temperature, so it is either A or D
Explanation:
Answer:
If Carbon Dioxide levels rise, then the temperature will
Rise
Explanation:
When temperature rises the rate of metabolism increases and this makes the carbon dioxide level to rise
Some cancers are caused by mutations that stop certain proteins from working. The inactivation of what kind of protein could lead to cancer?
A. One that slows down the cell cycle
B. One that acts as a growth-reducing molecule
C. One that responds to growth-promoting molecules
D. One that speeds up the cell cycle
Answer:
D
Explanation:
Since cancer is uncontrolled cell growth, a protein that speeds up cell growth would make the most sense
How many Sub-Cellular Structures are there in cells?
For GCSE Biology
Answer:
there are 8 in plants and 5 in animal cells
Explanation:
animal cells:
cytoplasm
nucleus
ribosome
mitochondrion
cell membrane
plants:
Nucleus
cytoplasm
cell membrane
cell wall
mitochondria
ribosomes
chloroplasts
permanent vachole
Answer:
Nucleus - the control centre of the cell
Ribosomes - responsible for creating proteins
Cytoplasm - gel-like substance where most of the chemical reactions in the cell take place
Mitochondria - the 'powerhouse' of the cell
Cell Membrane - controls what comes in and what goes out in a cell
John's class has been studying blood type and donations. John is not sure what blood type he has. At dinner, John asked him mon
if she knew his blood type. John's Mom has type A blood and his Dad has type B blood. John's Mom tells him he must have either
type A or type B like his parents. Is John's Mom correct?
A.No. Blood type is not inherited.
B.Yes. Traits are always inherited from parents.
o
C.No. John could have type A, B, AB, or 0. depending on the alleles he
inherits from his parents.
D.Yes John's Mom will give him an allele for type A and his Dad will give him
an allele for type B
Answer:
c
Explanation:
C.No. John could have type A, B, AB, or 0. depending on the alleles he
inherits from his parents.
If two transverse waves have the same wavelength, the wave with the __________ has the greatest wave speed.
A. smaller amplitude
B. greater frequency
C. smaller frequency
D. greater amplitude
If two transverse waves have the same wavelength, the wave with the greater frequency has the greatest wave speed.
What are transverse waves?Transverse waves are waves that oscillate along routes that are perpendicular to the direction that the wave is moving forward. Transverse waves include electromagnetic waves (such as radio and light), water surface ripples, and seismic S (secondary) waves.
Transverse waves vibrate in a direction that is opposite to the wave's path of propagation. Because the particles move in a direction that is opposite to the direction of the wave, this sort of wave is given its name. Transverse waves may be electromagnetic or mechanical in nature.
An interference that moves through a medium, like a vibrating string, is known as a mechanical wave.
Therefore, the correct option is B. greater frequency.
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two transverse waves have the same wavelength, the wave with the greater frequency has the greatest wave speed. Thus, the correct answer is option B.
1. Wavelength (λ): The distance between successive crests (or troughs) of a wave.
2. Frequency (f): The number of wave crests (or troughs) passing a point per unit time.
3. Wave Speed (v): The speed at which the wave propagates through the medium.
Relationship Between Wave Speed, Wavelength, and Frequency:
The fundamental equation relating wave speed, wavelength, and frequency is:
v = f λ
Given:
- Both waves have the same wavelength (λ).
- To determine which wave has the greater wave speed, we compare their frequencies.
Calculation:
Since the wavelength (λ) is constant for both waves, the wave speed v depends directly on the frequency f:
v ∝ f
This means that as the frequency increases, the wave speed increases proportionally.
- Option B (greater frequency): Since v = f λ and λ is the same for both waves, the wave with the greater frequency f will have a higher wave speed v.
- Options A, C, and D: The amplitude of the wave (Options A and D) does not affect the wave speed. Similarly, a smaller frequency (Option C) results in a lower wave speed.
What are two features that changed in the hominid skulls over time?
Answer:
The head got bigger and the face got smaller. Hope his helps.
Why are finches in the Galápagos Islands a good example of speciation?
A. Galápagos finches do not have to compete for food.
B. It is very easy to train a Galápagos finch to eat larger seeds.
C. There is only one species of finch living in the Galápagos Islands.
D. Galápagos finches have different kinds of beaks that match food
sources.
Help
Answer:
D. Galapagos finches have different kinds of beaks that match food
sources.
Explanation:
Finches in the Galápagos Islands are a good example of speciation because Galapagos finches have different kinds of beaks that match food sources, that is option D, as it is clear evidence of how natural selection can lead to the formation of new species.
What is speciation?The Galápagos finches, also known as Darwin's finches, are a group of bird species that are found on the Galápagos Islands in the Pacific Ocean, and the finches are known for their remarkable diversity of beak shapes and sizes, and this is an excellent example of how natural selection can lead to the formation of new species that leads to speciation.
Hence, finches in the Galápagos Islands are a good example of speciation because Galapagos finches have different kinds of beaks that match food sources, that is option D.
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