Why are the geochemical and biogeochemical cycles so important? a. keeps volcanoes from erupting so often. b. maintains oil deposits in the earth. c. maintains a balance of earth’s materials essential for all natural processes. d. slows down the process of evolution. plz

C. Maintains a balance of Earth's materials essential for all natural processes.

The geochemical cycle includes all the pathways of chemicals which takes place in the crust and surface of earth. Example: volcanic eruption. The elements like silica, iron etc comes out of the earth surface. The biogeochemical cycle includes all the natural cycles which takes place between living and non-living components of the ecosystem. Example: nitrogen cycle, phosphorous cycle, carbon cycle etc. These cycles maintains the balance of Earth's material essential for all natural processes such as photosynthesis, decomposition, sedimentation etc.

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

and after water is usually warmed by the sun the water temperature raises and then evaporates .