Explanation:
Using MLA Style properly makes it easier for readers to navigate and comprehend a text through familiar cues that refer to sources and borrowed information. Editors and instructors also encourage everyone to use the same format so there is consistency of style within a given field.
Fission and fusion are nuclear reactions that produce energy, though they are not the same. Fission is the splitting of a heavy and unstable nucleus into two lighter nuclei. Fusion is the process where two light nuclei combine together releasing vast amounts of energy.
Troposphere because it is at the very top. As u delve deeper, you get to the core which is the hottest part of the earth
The answer is D! living things are made up of units called cells.