Fact 1: Sweat is used for adjusting to hot temperatures by some animals.

Fact 2: Perspiration is produced by sweat glands in the skin and is secreted through pores.

Given the two facts above, answer the question "What is used for adjusting to hot temperatures by some animals?" with the following options: 
- secretion
 - autoregulation
 - evaporation
 - hibernation
 - hormones
 - hydration
 - perspiration
 - Pituitary gland


 

       perspiration  