(A) Iron (X)
(B) Hydrogen ()
(C) Chlorine (X)
(D) Copper (X)
Answers: All of the following are elements that plants need in very small amounts except Hydrogen.
(A) Iron (X)
(B) Hydrogen ()
(C) Chlorine (X)
(D) Copper (X)
Answers: All of the following are elements that plants need in very small amounts except Hydrogen.
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