Describe how a change in the environment could lead to increased immigration or emigration.

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.

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.

c. live where it’s cold and icy