1. Which of the following does NOT affect population? a) Immigration
b) Emigration
c) Death Rate
d) Diffusion

The answer is D) diffusion! I found this answer by process of elimination. Here is how:
Immigration involves moving to another country this would bring your old country’s population down and your new country’s population up.

Emigration is leaving your country to go to a new one also so this would bring your old country’s population down and your new country’s population up.

Death rate is people dying which brings the population down. The higher a death rate the lower a population.

This leaves only diffusion! Good luck and have an amazing day!

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