Which of these is stationary? O Oceanic plate
O Continental plate
O Mantle plume
O Volcanic island arc
O Continental volcanic arc

please help

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