The Nitrogen Cycle Is One of the Most Important and Complex

question 69

Multiple Choice

The nitrogen cycle is one of the most important and complex of the biogeochemical cycles. Why is nitrogen important?

• A)It's an Ozone depleting gas.
• B)It's an essential part of biological molecules such as proteins and nucleic acids (DNA)
• C)It's the most toxic element to living organisms
• D)Nitrogen dilutes the oxygen in the atmosphere causing respiratory problems

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