Fact 1: Conserving water can be used for survival in a dry environment.

Fact 2: Deserts are usually very, very dry.

Given the two facts above, answer the question "where can conserving water be used for survival in?" with the following options: 
- our planet
 - oceans
 - rivers
 - deserts
 - watershed
 - clouds
 - Mountains
 - soils


 

    deserts     