What is rapid population growth​

Rapid growth population is just a Increased rate of birth and decreased rate of death

Explanation:

Common Sense  

the most likely outcome of fewer loon territories is that hawks would increase in proportion because the benefit of victory would be greater. hawks and loons are natural rivals of resources and victories in the game, since the lakes drying up affected the loons, the hawks would be benefited from the drought.

the answer is d.index