Think about it 1. Living organisms are composed mostly of four elements: , , , and .
Recycling in the Biosphere
2. Unlike the -way flow of energy, matter is within and between .
3. What are biogeochemical cycles?
4. What three processes are involved in the cycling of matter?
A.
B.
C.

1. Carbon, hydrogen, oxygen, and nitrogen, 2. high, measured speed.    3. Biogeochemical cycle, any of the natural pathways by which essential elements of living matter are circulated. The term biogeochemical is a contraction that refers to the consideration of the biological, geological, and chemical aspects of each cycle. 4. These three processes move water into the atmosphere. Evaporation occurs when water on Earth's surface changes to water vapor.

Explanation:

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this