ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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only between living things (biosphere)
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only in the soil (geosphere)
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between the 4 different spheres
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only in the air (atmosphere)
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Detailed explanation-1: -The movement of nitrogen between the atmosphere, biosphere, and geosphere in different forms is called the nitrogen cycle (Figure 1), one of the major biogeochemical cycles.
Detailed explanation-2: -Four processes participate in the cycling of nitrogen through the biosphere: (1) nitrogen fixation, (2) decay, (3) nitrification, and (4) denitrification. Microorganisms play major roles in all four of these.
Detailed explanation-3: -“Nitrogen Cycle is a biogeochemical process which transforms the inert nitrogen present in the atmosphere to a more usable form for living organisms.” Furthermore, nitrogen is a key nutrient element for plants.
Detailed explanation-4: -Like carbon, nitrogen has its own biogeochemical cycle, circulating through the atmosphere, lithosphere, and hydrosphere (Figure 5). Unlike carbon, which is stored primarily in sedimentary rock, most nitrogen occurs in the atmosphere as an inorganic compound (N2).
Detailed explanation-5: -Biogeochemical cycles important to living organisms include the water, carbon, nitrogen, phosphorus, and sulfur cycles.