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Answer:

Polar regions

Explanation:

Because plants don't survive in the extreme cold and ice that cover these regions year-round.

Due to their intense and harsh environmental circumstances, polar regions like the Arctic and Antarctica often have the lowest levels of biodiversity. So, the correct option is B.

The term "biodiversity", which is short for "biological diversity", describes the range of living things and ecosystems that exist on Earth. It includes a wide range of species, genetic diversity within those species, a wide range of environments, and a range of ecological processes. Humans benefit greatly from biodiversity as it provides them with food, medicine and ecological services such as pollination and water and air purification.

Because of their intense and harsh environmental conditions, polar regions such as the Arctic and Antarctica often have the lowest levels of biodiversity. These regions have a relatively limited diversity of species because the cold and dry conditions make it difficult for many species to live. Furthermore, these areas often have low population density due to the severe environment and scarce resources.

So, the correct option is B.

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Answer:

440 - 410 million years ago

Explanation:

Whatever their origins, animals may have ventured onto land early in the Cambrian. Previously scientists believed that animals did not begin to colonise the land until the Silurian (440 - 410 million years ago).

Answer:

8

Explanation:

9

Answer:

biologist observed the squirrels and did not test variables

Answer:

The answer is C hope this helps

The length of the shadow on the sun stick differs at noon and in the late afternoon, the shadow is longer in the late afternoon because the sun is at an angle.

Shadow may be defined as the dark figure thrown upon a surface by a body blocking the rays from a source of light.

When the sun is at an angle usually in the early morning or late afternoon, the shadow of any object is found to be larger as compared to its original shape.

Therefore, the length of the shadow on the sun stick differs at noon and in the late afternoon, the shadow is longer in the late afternoon because the sun is at an angle.

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Given what we know, we can confirm that Nathan can expect the means of reproduction to be the same in both species, meaning that the correct answer would be option B.

When dealing with unicellular organisms, many aspects will always remain the same between the distinct species. One such aspect is the reproduction method used universally by all unicellular species, that being reproduction through binary fission. The organism replicates its DNA and then divides into two identical cells.

Therefore, we can confirm that Nathan can expect the means of reproduction to be the same in both species, meaning that the correct answer would be option B.

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Answer:

Domain

Explanation:

The order of classification is like this (from biggest to smallest):

Domain -> Kingdom -> Phylum -> Class -> Order -> Family -> Genus  -> Species

Hope this helped!

Answer:

They do such a great job of conducting the electricity and power through the appliance they are used in.

Explanation:

Answer:

Genetic drift Natural

Explanation:

In evolution, which driving factor most consistently requires a small population as a precondition for its occurrence? Genetic drift Natural In evolution, which driving factor most consistently requires a small population as a precondition for its occurrence? Genetic drift Natural selection Nonrandom mating Mutation.

In evolution, Genetic drift is the driving factor which most consistently requires a small population as a precondition for its occurrence.

A change in the relative frequency of alleles within a population is an example of genetic drift. Natural selection, often known as the differential survival and reproduction of individuals across a population as a result of differences in phenotype, is one of the possible causes of this phenomenon.

Natural selection gives an advantage to some characteristics in a population, which results in certain individuals being able to reproduce while others, who have characteristics that give them a disadvantage, will provide their genes to subsequent generations. This will ensure that the allelic frequency of each successive generation will be distinct from that of the parent group.

Therefore, a subpopulation may become genetically diverse from its parent population due to genetic drift.

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Answer:

The answer of this question is the opening and closing of the heart valves of the heart valves. I believe that the answer is C, or "valves opening and closing while returning blood to the heart"

The national wildlife refuge refers to protected areas of US managed by United State and wildlife services. They provide land for fish, wildlife and plants.

The National Wildlife Refuge System is the system of public lands to conserve America's fish, wildlife, and plants.

The National Wildlife Refuge Association manage the integrity of the National Wildlife Refuge System with advocacy, restoration and research. The National Wildlife Refuge System is visited by nearly 50 million visitors each year.

Thus, this statement is true.

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Answer:

PEOPLE KNOWN FOR: abolitionism. William Lloyd Garrison, American journalistic crusader who published a newspaper, The Liberator (1831–65), and helped lead the successful abolitionist campaign against slavery in the United States.

Explanation:

For white Southerners, Brown was the worst possible nightmare: a fearless, committed abolitionist, armed, accompanied by blacks, and willing to die to end slavery. Indeed, in the minds of Southerners, Brown was the greatest threat to slavery the South had ever witnessed.

Answer:

3

Explanation:

Answer:

There are 3 different species or breeds of elephants.

Explanation:

They are:

- The African Savanna aka Bush Elephants

- The Asian Elephants

- The African Forest Elephants

I hope it helps! Have a great day!

Anygays-

The properties of the gas in each test tube can be used to tell whether the gases are the same or different, because depending on the substance, chemical reactions will occur.

This happens in the flame test, which is based on the fact that when a certain amount of energy is supplied to a certain chemical element (in the case of a flame, energy in the form of heat), some electrons in the last valence shell absorb this energy.

Moving to a higher energy level, producing what we call an excited state. When one of these excited electrons returns to the ground state, it releases the energy previously received in the form of radiation.

With this information, we can conclude that the properties of the gas in each test tube can be used to know if the gases are the same or different, because depending on the substance, chemical reactions will occur.

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Explanation:

1.What happens as the number of niches in an ecosystem goes up?:

- As the number of niches increases, I suppose there would be more competition for space

2.What group of organisms has the greatest number of species?

-In terms of numbers of species, insects certainly represent the largest percentage of the world's organisms. There are more than 1 million species of insects that have been documented and studied by scientists.

3.Why do coral reefs have such a high biodiversity?

-High biodiversity ensures the health of the reef. It spreads those roles across many species, so if one species is affected by a disease or other threat, that role won't be lost on the reef.

Answer:

The Linnaean system is based on similarities in obvious physical traits. It consists of a hierarchy of taxa, from the kingdom to the species. Each species is given a unique two-word Latin name. The recently added domain is a larger and more inclusive taxon than the kingdom.

Explanation:

brainleist please

Assuming complete dominance and following the product probability rule, the probability of obtaining an offspring that is triply dominant AABBCC is 1/32.

We talk about complete dominance when the dominant allele completely masks the recessive allele. It is an inheritance pattern.

This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant phenotype. The dominant allele is hiding the expression of the recessive allele.

Many genes show complete dominance.

In the exposed example, we need to cross AaBbcc x AaBbCc and calculate the probability of getting offspring that is triply dominant. To do it, we will follow the product probability rule.

The product probability rule allows us to calculate the probability of occurrence of event A and event B at the same time.

It is about a joint probability of two or more events that might happen simultaneously, not excluding each other.

This rule is based on the dependence or independence of the events. If two events A and B are independent of each other, the occurrence of one of them does not affect the occurrence of the other one.

For independent events, the rule establishes that, given two different events A and B, the probability of occurrence of both together is

P(A∩B) = P(A) x P(B)

Since these are independent genes, for easier calculations, we can perform crosses that involve each of the genes separately -events-, and then multiply de results according to the genotype we are interested in (AABBCC).

Gene A

Parentals) Aa   x   Aa

Gametes) A   a     A   a

Punnett square)   A      a

                     A    AA    Aa

                     a     Aa    aa

F1)  1/4 AA

     1/2 Aa

     1/4 aa

Gene B

Parentals) Bb   x   Bb

Gametes) B   b     B    b

Punnett square)   B      b

                    B       BB    Bb

                     b       Bb   bb

F1)  1/4 BB

     1/2 Bb

     1/4 bb

Gene C

Parentals) cc   x   Cc

Gametes) c    c     C    c

Punnett square)   C      c

                      c      Cc    cc

                      c      Cc    cc

F1)  1/2 Cc

      1/2 cc

The probability of getting and individual with genotype AABBCC is

P(AABBCC) = P(AA) x P(BB) x P(CC)

P(AABBCC) = 1/4  x 1/4  x 1/2

P(AABBCC) = 1/4  x 1/4  x 1/2

P(AABBCC) = 1/32

The probability of obtaining an offspring that is triply dominant AABBCC is 1/32.

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Answer:

I think humans and whales are closely related on the evolutionary tree because they are both mammals and both have endoskeleton

Answer:

Afferent neurons.

Explanation:

because in the dorsal roots carry impulses from the body's sensory receptors to the spinal cord where the information begins to be processed and because The ventral horns contain efferent motor neurons which control the body's periphery.

Answer:

Land animals breathe air.

Explanation:

Answer:

the animals reproduce whilst young and produce a large number of offspring in a short period of time

Answer:

Charles Darwin proposed one of the theory of evolution which can still be observed till date in organism.

Organism have numerous offsprings and only the offspring with characteristics to overcome unfavorable conditions survive and passes such genes to their offsprings

The amniotic egg, which is present in animals such as reptiles, birds, and mammals, is a good example of homo-logy.

The term 'homo-logy' makes reference to the same evolutionary origin (ancestor) for a given structure.

A structure and/or sequence is homo-logous when it derives from the same evolutionary ancestor.

Conversely, an analogy means that the structure and/or nucleotide sequence do not share an evolutionary origin.

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Answer:

here

Explanation:

force (F)=10N

distance (d)=10m

work=F×D

=10N × 10m

=10N/M

=10 j

The region of the human alimentary tract that has both the largest population of bacteria and the greatest species diversity is the the colon.

Normal flora are those microorganisms that resides in a living organism without causing it harm or diseases.

These normal flora become established in different parts of the body from birth such that the normal flora found in the mouth is not the same as the one found in the colon of the alimentary tract.

From research works, the large intestine (colon) is known to contain 100 billion per milliliter of fluid culture.

The massive numbers of bacteria in the large intestine (colon) creates a great special variation in the flora. The streptococci and lactobacilli found in the colon often adhere to cells by means of capsules surrounding the bacteria.

Therefore, the region of the human alimentary tract that has both the largest population of bacteria and the greatest species diversity is the the colon.

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