You are presented with the question "Effective insulation has a positive impact on an animal's what?" and the following answer choices: 
- heat energy
 - survival
 - water
 - food
 - growth
 - ideas
 - Energy.
 - energy

Now knowing that staying warm has a positive impact on an animal 's survival and effective insulation is the way to keep the warm air warm, choose the best answer.


 

  survival       