Which of the following is an example of geographic isolation?A population of salmon dies out because they cannot find food.
A zebra with a long mane moves into a population of zebras with short manes.
A population of squirrels is separated by a mountain range and cannot interbreed.
Two populations of rabbits are forced together after a flood.
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Which of the following statements is true?
Extinction speeds up the evolution of other species.
Earth has only experienced one mass extinction in its history.
Speciation is caused by a reduction in gene flow.
Genetic diversity can be increased by genetic drift.

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Low genetic diversity _____.
helps a population survive
increases the risk of extinction
can cause genetic drift
is the result of genetic mutation
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A species is endangered if it _____.
no longer exists anywhere on earth
is in danger of becoming extinct
is not native the environment
has high genetic diversity
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Which of the following statements is true?
Gene flow evens out genetic differences between populations.
Genetic drift increases the genetic differences between populations.
Natural selection, mutation, and genetic drift are random events.
The bottleneck effect increases the genetic diversity of a population.

Answer:

hydrogen ion

Explanation:

A hydrogen ion is created when a hydrogen atom loses or gains an electron. A positively charged hydrogen ion (or proton) can readily combine with other particles and therefore is only seen isolated when it is in a gaseous state or a nearly particle-free space.

Answer: A

Explanation:

Answer:

A

Explanation:

Different organisms have a different amounts of chromosomes. Therefore, it is false.

What are chromosomes?

The thread-like chromosomes that convey the genomic information from cell to cell are formed of protein and a single DNA molecule. Chromosomes are found in the nucleus of cells in both plants and animals, including humans.

Each cell's nucleus contains chromosomes, which are structures that resemble threads and contain the DNA molecule. Each chromosome is constructed from DNA that has been tightly wound around proteins called histones numerous times to support its structure.

Not all organisms have the same amount of chromosomes, such as drosophila has 4 chromosomes, humans have 46, a dog has 78 chromosomes and an onion has 16 chromosomes. Therefore, it is false.

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Little Bear's porridge in the Goldilocks tale, abiotic elements must be just right for life to grow.

Thus, Many creatures also need a certain collection of abiotic elements in order to flourish. a snake residing in the arid region of Arizona. It can move through sand and loose soil by twisting its body, therefore it is at home in that dry environment.

Additionally, it can escape the heat by slipping under rocks.

Some snakes are also nocturnal, meaning they spend the most of the day sleeping and doing their activities at night when the sun is not out.  a person picking up one of these snakes with desert adaptations and setting it atop a snow-capped Himalayan summit.

Thus, Little Bear's porridge in the Goldilocks tale, abiotic elements must be just right for life to grow.

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Biotic factors may include: plants the rabbit eats, predators that eat the rabbit, and animals that compete with the rabbit for food and territory. Abiotic factors may include: temperature, rainfall, and space.

Answer:

Explanation:

Many bacteria are present in the caecum of cow, which help in the digestion of a nutrient called cellulose which is contained by plants. Others include Megasphaera, Fibrobacter, Streptococcus, Escherichia, Chytridiomycetes fungi, and methanogens. It is predicted that 70% of microbes in the rumen have yet to be identified. The proportions of microbes present vary greatly depending upon the diet of the ruminant