How are the carbon, oxygen, and nitrogen cycles vital to sustaining life on earth? a. carbon, oxygen, and nitrogen are vital components of life on earth. b. the carbon, oxygen, and nitrogen cycles allow vital elements to return to usable form by organisms. c. the carbon, oxygen, and nitrogen cycles are an important interface between biotic and abiotic factors. d. all of the above are reasons the carbon, oxygen, and nitrogen cycles are vital to life on earth.

Answer;

B. The carbon, oxygen, and nitrogen cycles allow vital elements to return to usable form by organisms.

Explanation;

-Carbon, nitrogen, and oxygen cycles are biogeochemical cycles.The carbon, oxygen, and nitrogen cycles are all biogeochemical cycles. They show the movement of elements through living and nonliving components of the Earth. Carbon, oxygen, and nitrogen, are essential components of life that pass through organisms and nonliving components, but are never used up.

-Nutrients cycle through the environment endlessly. Producers play a vital role in the cycle of carbon. Phosphorus cycle keeps phosphorus availability slow. Nitrogen cycle relies on bacteria that make nitrogen useful to organisms & bacteria that can return it from the atmosphere.

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.