Q15 Biogeochemical cycles 6 Points For each element listed in Q15-1-15.pdf
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Q15 Biogeochemical cycles 6 Points For each element listed in Q15.1-15.3, choose the below answer that best describes how humans are altering its biogeochemical cycle. Note that there is only one correct answer for each element. Answer choices: A. Humans burn limestone, increasing carbon dioxide concentrations in the atmosphere B. Humans burn phosphorous-rich rocks, increasing the phosphate concentration in the atmosphere. C. Humans burn fossil fuels, increasing carbon dioxide concentrations in the atmosphere D. The rate of denitrification is high in city sewage, increasing the nitrogen gas content of the atmosphere E. Humans invented a process to fix nitrogen gas into ammonia, increasing the amount of bioavailable nitrogen in soils and waters F. Humans mine phosphorous-rich rocks, increasing the phosphate content of soils D. The rate of denitrification is high in city sewage, increasing the nitrogen gas content of the atmosphere E. Humans invented a process to fix nitrogen gas into ammonia, increasing the amount of bioavailable nitrogen in soils and waters F. Humans mine phosphorous-rich rocks, increasing the phosphate content of so and waters G. Humans breathe in oxygen, decreasing the removal of phosphorus from water by sorption.
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.
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