You are presented with the question "climate is the average what over a long period of time?" and the following answer choices: 
- Earth's atmosphere circulation
 - By wind and rain
 - heat and pressure
 - bacteria
 - Temperature changing
 - Earth's density
 - characteristics
 - gravity

Now knowing that climate is the average weather in an area over a long period of time and weather refers to the circulation of the Earth's atmosphere, choose the best answer.


 

 Earth's atmosphere circulation        