Answer:
A
Explanation: hope this helps :)
Yes, studying how mayfly population affects the number of trout in a stream is ecology.
Ecology seeks to unveil how different organism relate with one another as well as their environment.
Ecology is basically the study of distribution,abundance and relation of organisms and their interaction with their environment.
The Mexican Repatriation Act
<span>The local government</span> used national guard which represented law in times of civic unrest. They protected people and government from civil disorders and other crimes.