Which of two Earth's spheres are involved when a volcano is erupting? atmosphere and hydrosphere
geosphere and cyrosphere
geosphere and atmosphere
O geosphere and biosphere
I will give brainleast

What is the amount of organic matter in all living organisms in a habitat called?

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