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

Fact 2: Drought can be caused by less than normal rainfall.

Given the two facts above, answer the question "Lack of moisture in the air causes " with the following options: 
- humidity
 - cold
 - Pollution
 - sweating
 - erosion
 - Drought
 - heat
 - flooding


 

      Drought   