Fact 1: Condensation causes clouds to form.

Fact 2: With increasing cloud blocking the sun, temperatures drop considerably.

Given the two facts above, answer the question "What causes sun blocking and temperature drops?" with the following options: 
- sweating
 - energy barrier
 - condensation
 - peachleaf willow
 - scattered light
 - global warming
 - Greenhouse gases
 - Dehydration


 

   condensation      