Its B clearing and farming. Because if you think of it when someone clears trees and bushes they most likely won't come back.
The correct answer would be D), over millions of years, Pangaea broke apart and drifted to form the seven continents.
Swim Bladder is the answer for sure
form cell membrane
Explanation:
It provides barriers in cellular membranes to protect the cell , and they make barriers for the organelles with in those cells. It work to provide pathways for various substance across membranes
