You are presented with the question "What do some cacti use waxy leaves for?" and the following answer choices: 
- hydration
 - Chemical energy
 - storing water
 - it needs them
 - support
 - survival
 - to stay warm
 - cellulose

Now knowing that waxy leaves are used for storing water by some plants and many cacti also have a waxy coating that helps the plant conserve moisture in desert climates, choose the best answer.


 

   storing water      