You are presented with the question "When an animal or plant group gets much smaller, that's called a:" and the following answer choices: 
- bottleneck
 - Winter
 - Movement
 - population explosion
 - genus
 - relocation
 - Mason jar effect
 - choker

Now knowing that bottleneck effect occurs when a population suddenly gets much smaller and animals and plants exist as populations, choose the best answer.


 

 bottleneck        