Solid rock is much denser than liquid magma when the relatively cool rock of a tectonic plate enters the liquid lower mantle how would you expect the cool rock to move within the liquid portion of the mantle ?

Which ecosystem best fits the characteristics listed below? which ecosystem best fits the characteristics listed below? ii. seasonal migrations of millions of wildebeests, zebras, and elephants iii. large numbers of predators, such as lions iv. acacia trees and grasses a. the congo rainforest b. the african mangroves c. the serengeti grasslands d. the sahel