Fact 1: An animal usually requires a warm body temperature for survival.

Fact 2: Temperature Temperature is an measurement of the amount of heat.

Given the two facts above, answer the question "What do most animals need to be sure they survive on the Earth?" with the following options: 
- smell and taste
 - biodiversity
 - a building to live in
 - regulated body heat
 - a mate
 - sense organs
 - food and shelter
 - a car


 

    regulated body heat     