Answer:Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification.
Explanation:
Properly identifying each species.
Accurately recording his findings.
Not interfering with ecosystem while studying the birds.
the answer could not be D because a Golgi Apparatus is a tiny structure, or organelle, in a cell that "packages" nutrients for use inside the cell. The answer could not be c. because a nucleus is a tiny structure, or organelle, in a cell that "packages" nutrients for use inside the cell. The answer could not be Endoplasmic Reticulum because that is where proteins are transported from one part to the other. So the only answer left is Mitochondria, because the Mitochondriamain function is to produce ATP, the energy currency of the cell.