Fact 1: The Earth being tilted on its rotating axis causes seasons.

Fact 2: Weather changes from season to season.

Given the two facts above, answer the question "What causes weather changes on Earth? " with the following options: 
- the sun's energy
 - The tilt in its rotating axis.
 - high temperature
 - Weather in space
 - Vertical movement
 - Greenhouse gases
 - Spinning backwards
 - wind and erosion


 

  The tilt in its rotating axis.       