Answer:
I believe it would be mitosis.
Explanation:
Skeletal muscle contractions do in fact demand large quantities of ATP (adenosine triphosphate), the universal source of cellular energy. In order to accommodate this necessity, skeletal muscle cells (myocytes) are packed with mitochondria, which are the energy powerhouses of the cell.
However, the production of ATP would halt in mitochondria if the necessary substrates (fuels) are not present to enter these organelles, mainly glucose and oxygen (O2). So, additionally, skeletal muscle is also loaded with glycogen, a storage form for glucose (as starch), and myoglobin, an enzyme similar to hemoglobin in that it binds an O2 to hold it for use during contraction.
Answer:
Mutations and sexual reproduction is the right answer
Hope it helps:)
Please mark me the brainliest if you won't mind:)
Basically it has chemicals that break down its food and it poops the left overs out
Urinary system. hope that helps