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stealth61 [152]
3 years ago
10

Variation in a trait is a required condition for natural selection to act on a population for that trait. Assuming a

Biology
1 answer:
mel-nik [20]3 years ago
8 0
Because two organisms one with the trait and one without could make an organism which would cause variation
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If immigration and emigration numbers remain equal which of these could cause a slowed growth rate
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Answer;

Decreased birthrate

If immigration and emigration numbers remain equal , decreased birthrate could cause a slowed growth rate.

Explanation;

All populations change in size with time . Change in population is dependent of various factors, namely; birthrates, death rates, immigration and emigration.

Therefore; change in population size would be given by the difference of the sum of birth rates and immigration and the sum of death rates and emigration. That is; Change in Population Size = (Births + Immigration) - (Deaths + Emigration). A decreased birth rate with emigration and immigration remaining constant would cause a slowed growth rate.

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An isotonic solution is a solution in which the amount of dissolved material is equal both inside and outside of the cell. Water still flows in both directions, but an equal amount enters and leaves the cell.  Hope this helps. :)

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Reproduction.

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Dependence is the answer
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