Answer:
D
Explanation:
Isostasy is the condition of equilibrium that results in the displacement of the mantle by the continental and oceanic crust.
Isostasy is also known as standstill. It is the condition that makes earth's crust and mantle to float dependin on the thickness of the roots.
I believe it is A because during the time they could not have blocked water and they where not cowered that paid there enemies
Sweeping floors, washing dishes, laundry, and cooking can all be done without running water or electricity. Hope I helped! <span />
Thewissen and other collaborators announced that Indohyus, a small deer-like mammal belonging to a group of extinct artiodactyls called raoellids, was the closest known relative to whales.