Can someone help me with 33

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand

An enormous wave generated by an earthquake beneath the seafloor is known as a

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