Migration is a type of movement that changes population size, and population viability Population sizes are under constant fluctuation. Given these facts, what can happen to a population when animals begin to migrate among the following options:
- It expands
 - harm them
 - it can change species
 - Move to another area
 - it can eat more
 - it can go extinct
 - it can fluctuate
 - Plant growth is reduced


 

       it can fluctuate  