Question

which of the following statements explains how migration can affect population size? emigration of a native population higher predators will lead to an increase in the population of the producers. immigration of a new population higher predators could lead to an increase in the population of the producers. emigration of a population will cause the other native populations to emigrate, as well. immigration of a new population only leads to detrimental effects on the native species.

Explanation:

• Option A: Immigration of new population can have both positive and negative effects, not only detrimental, so A is wrong.
• Option B: Emigration of one population doesn't directly force other native populations to emigrate; there's no such direct causal link, so B is wrong.
• Option C: If a new population (immigrants) has higher predators, these predators will likely consume more of the native prey (which may include herbivores that eat producers). If the herbivore population (prey of the new predators) decreases, the producers (plants, etc.) they eat will have less consumption pressure, leading to an increase in producer population. This makes sense in terms of ecological food webs and population dynamics.
• Option D: Emigration of native population with higher predators – if the native population (predators) emigrates, their prey (like herbivores) would increase, which would lead to a decrease in producers (since herbivores eat them), not an increase. So D is wrong.

Answer:

C. Immigration of a new population higher predators could lead to an increase in the population of the producers.