Answer:
The answer is:
A) Its measures are based on divisions that are powers of ten.
Explanation:
The explanation for why this is the answer is that it is true and obvious that the metric measurement system relies on certain divisions and prefixes that are based on the powers of ten such as "centi-" or "milli-". In short, the metric measurement system's basis is being able to have it's measures somewhat "altered" or "adjusted" by these particular prefixes to fit the item or subject or object being measured.
b. a disturbance that repeats over and over
c. a disturbance that kills keystone species
d.a disturbance that destroys soil
Answer:
The correct answer is option B.
Explanation:
A disturbance is a short term change in environmental conditions that causes a noticeable alteration in an ecosystem. If this change repeats itself over and over it is characterized as Cyclic disturbance.
This change or disturbance takes place because of several disturbance forces and in the absence of these forces ecosystem tends to return to conditions as it was pre-disturbance conditions.
Thus, the correct answer is option B.
A disturbance that repeats over and over
When meiotic cell division occurs, a diploid parent cell experiences cell division to produce four haploid cells. Thus, if three parent cells undertake meiosis, twelve haploid cells will be created.
Twelve cells are produced
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: 1. Option C.
2. Option D
3. Option B
4. Option B
5. Option A
Explanation:
The third statement, 2) the 4th statement. 3) The second statement, 4) the second statement, 5) first statement.