What is the main form of nitrogen found on Earth?
A) N₂
B) NO
C) NO₃⁻
D) NH₄
Correct Answer:
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Q28: Which of the following processes does denitrification
Q31: Greenhouse gases
A) such as CO₂, CH₄, and
Q32: What is the largest carbon sink on
Q32: What reaction is catalyzed by mercuric reductase?
A)
Q37: Lignin is a complex polymer of methoxylated
Q37: In the oceans,sulfur exists primarily as _,and
Q38: The two major forms of carbon that
Q39: Lysis of marine algae and cyanobacteria releases
Q39: The largest reservoir of methane is found
A)
Q40: Mercury is NOT used in
A) electronics.
B) neurotoxins.
C)
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