Answer:
B. It is studying the ecosystem.
Explanation:
Because if you are growing food and we don’t get enough rain then our crops don’t grow. We don’t have enough food for everyone
I believe it’s B or D sorry I’m not 100% sure
Mitochondria have two membranes, an outer membrane and an inner membrane. ... It is also where many other chemical reactions take place to carry out the mitochondria's many functions. An increased surface area creates more space for more reactions to occur, a
