Earths continents are constantly in motion because they sit on top of the gigantic plates which float on earths manyle. energy from the earths core creates convection currents in the molten layer ant the currents move the plates. over extremely long periods of time, make create new

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