Fact 1: Animals require water for survival.

Fact 2: Water hydrates the cells.

Given the two facts above, answer the question "In order to survive, animals require what?" with the following options: 
- food and shelter
 - light energy
 - securing a loan
 - cashing their checks
 - Organic compounds
 - hydration of their cells
 - eating their enemies
 - Chemical energy


 

      hydration of their cells   