Answer the following question given this paragraph: 

Overpopulation takes place when the number of organisms exceeds the carrying capacity of the region. What is the carrying capacity of Earth for humans? Are seven billion people the human carrying capacity? Nine billion? We don't know yet.


Q: Overpopulation takes place when the number of organisms in an area exceeds what?

 Choices:

- consumers

- predators

- biome size

- carrying capacity

A:
carrying capacity
