Fact 1: Lack of moisture in the air causes low amounts of rainfall.

Fact 2: If there is enough moisture in the clouds, rain is produced.

Given the two facts above, answer the question "What's one reason it won't rain?" with the following options: 
- fissures of hot, acidic water
 - a hemisphere is tilted away from the sun
 - Warm and cold air meet
 - The clouds don't have enough water
 - The clouds have too much water
 - Too much moisture in the environment
 - decreases the freezing point
 - erosion from rivers


 

    The clouds don't have enough water     