Question

Which of the following statements about biogeochemical cycles is not true?
a.
Biogeochemical cycles include living and nonliving elements.
b.
The rock cycle is a biogeochemical cycle.
c.
Biogeochemical cycles are an important part of the Earth system.
d.
Carbon, nitrogen, and oxygen cycles are biogeochemical cycles.

Answer 1

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Answer 2

which do you think it is?

Answer 3

C.

Answer 4

Why do you think it's C?

Answer 5

@ttylol i know you are new to the site so please dont give out direct answers it is against the rules also :
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Answer 6

"They are the essential drivers of environmental processes as they regulate the levels of elements essential for life among different pools. Alterations in biogeochemical cycles, such as human induced rapid increase of the concentration of certain elements in the atmosphere, may change the proportion of these elements in particular pools, by making them too scarce or too abundant. Excess element in a particular pool may involve levels that are poisonous for life or critical changes to environmental processes. All biogeochemical cycles are interlinked with each other to some extent, and cycles may affect environmental conditions at global scales (particularly when athmospheric pools are involved), as well as at local scales (e.g. when elements are accumulated in soil pools)" ( http://www.researchgate.net/post/What_is_the_role_of_biogeochemical_cycles_in_environment1)