In broad terms, finches. In specific terms, he observed how over time, the beak sizes and shapes of said finches changed to adapt to the food sources available.
I hope I was able to help. Best of luck.
Answer:
i believe that cloning animals wouldn't be such a bad idea because think about how much cheaper the price of meat would get, and also think about the emotional aspects of it you could potentially clone your favorite dog or pet. the prices of meat would dramatically decrease because there is meat that are only found in a certain type of cow and it could also help world hunger.
Explanation:
As for this problem, the most probable answer and the most likely answer for this one would be D. the effect of pesticides on organisms in the environment.
A toxicologist would only study about chemicals and their effect on organisms in the environment. Pesticides are chemicals made to combat organisms that aren't wanted particular parts of the environment such as crops and rice field. These pesticides don't just affect those organisms that are targeted, but even the users and other organisms that may have come in contact with pesticides.