Fact 1: Staying warm has a positive impact on an animal 's survival.

Fact 2: Everyone needs to conserve some energy to stay warm.

Given the two facts above, answer the question "Conserving energy has a positive effect on what?" with the following options: 
- Doing what you like
 - Increasing global temperatures
 - Animal survival
 - important habitats
 - animals with backbones
 - most organisms
 - Profits for oil companies
 - Most plants


 

   Animal survival      