You are presented with the question "What causes weather changes?" and the following answer choices: 
- the moon
 - the earth orbiting the sun
 - degrees Celsius
 - the environment
 - agriculture
 - Greenhouse gases
 - global warming
 - rivers

Now knowing that earth orbiting the Sun causes seasons to change and weather changes from season to season, choose the best answer.


 

  the earth orbiting the sun       