I assume the answer is man-made, correct?
Convection in the asthenosphere is the main reason for the movement of tectonic plates.
Answer: it's because they need to provide a lot of energy.
Explanation: fat cells have many mitochondria because they store a lot of energy. Muscle cells have many mitochondria, which allows them to respond quickly to the need for doing work.
An activist is a person who fight for something they believe.
Answer:
Yes , they call it " Ribose Sugar "
Ribose, found in RNA, is a "normal" sugar, with one oxygen atom attached to each carbon atom. Deoxyribose, found in DNA, is a modified sugar, lacking one oxygen atom (hence the name "deoxy").