Concerning Biogeochemical Cycles, All of the Following Are True EXCEPT

question 27

Multiple Choice

Concerning biogeochemical cycles, all of the following are true EXCEPT:

• A) nearly half of nitrogen in the biosphere comes from anthropogenic sources
• B) carbon dioxide production by human industry has outpaced fixation
• C) most microbes can interconvert the six major elements, from one to another
• D) organisms acquire elements from abiotic sources or from other organisms
• E) biogeochemistry is the metabolic interactions of microbes with biotic and abiotic environs