an increase in the number of bats a decrease in the number of mosquitoes an increase in the number of insect-eating birds a decrease in the number of Japanese beetles
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A marsh in your neighborhood dried up during a long, hot summer. This is most likely to cause which of the following changes in the neighborhood?
Possibilities:
- an increase in the number of bats
- a decrease in the number of mosquitoes
- an increase in the number of insect-eating birds
- a decrease in the number of Japanese beetles

a decrease in the number of mosquitoes