A change in environment could either make people leave that place or go to that place. An example of each:
Immigration: Weather is nice and sunny most of the time. People like good weather so they move there
Emigration: Snow storm happens at a place. People can't do anything and they will leave that place since it's an unfavorable place to live in.
Answer:
A change in environment could either increase immigration or emigration.
Explanation:
Immigration: If there is a drought, herbivores like rabbits and deers would leave the drought area due to lack of food.
Emigration: if there’s a lot of rain, herbivores like rabbits and deers would move to the rany area due to increase of food.
