Fact 1: The Earth revolving around the Sun causes the seasons to change on its axis.

Fact 2: Winter is a horrible season.

Given the two facts above, answer the question "What is a cause of the Earth revolving around the Sun?" with the following options: 
- heat
 - wind
 - winter
 - Light
 - Movement
 - energy
 - sunlight
 - Joules


 

   winter      