Question

How would an increase in nest sites affect a population of pigeons?

Answer 1

D. The population would be reduced the next year.

Step-by-step explanation:

Answer 2

If there was an increase in nest sites, the pigeon population would increase. This would of course be due to the greater amount of space in which the pigeons could breed and raise their offspring. Hopefully that's answered the question for you.
-Hope this helped! :D