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Which Forms of Nitrogen Are Readily Usable by Plants

Question 78

Multiple Choice

Which forms of nitrogen are readily usable by plants?

A) NH₃, NH₄⁺, and NO₃-
B) NH₄⁺and NO₂-
C) N₂and NH₃
D) NH₄and NH₃
E) NO₃- and NO₄-

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