If if animals can no longer get food they will move to another area, then when will animals move to another area?

Answer choices:
- To keep their body heat.
 - reusing materials
 - If they can no longer get food
 - If they are bored
 - marshes and swamps
 - If they have too much money
 - Warm air moving into cold air
 - If they have too much food

 

   If they can no longer get food       