6. What is a volcano? 11 point) Oa tall mountain O a chemical reaction that produces fire O an atmospheric condition O an opening in Earth's crust

How long does it take neptune to orbit the sun?

The chemical or mechanical process by which rock is gradually broken down eventually becoming soil

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