What happens to the amount of matter through the cycling of matter? 1. It decreases
2. It stays the same
3. It increases

Cycles of matter are called biogeochemical cycles, because they include both biotic and abiotic components and processes. Components that hold matter for short periods of time are called exchange pools, and components that hold matter for long periods of time are called reservoirs.

Explanation:

answer; ///(b) it is composed of four protein chains and four heme groups;

true is the answer : )