You are presented with the question "What does biodiversity do towards the poles?" and the following answer choices: 
- moves
 - decreases
 - gains
 - survive
 - increases
 - migrate
 - It expands
 - varies

Now knowing that biodiversity generally increases from the poles to the equator and biodiversity, on the whole, increases towards the equator and decreases towards the poles, choose the best answer.


 

  decreases       