問題詳情
27. It is possible to make a form of nitrogen that is useable by plants; however, the major drawback to this process is:
(A)time involved
(B)getting enough nitrogen
(C)cost of converting nitrogen to a useable form
(D)temperatures must be extremely high
(E)it is difficult to contain the end product
(A)time involved
(B)getting enough nitrogen
(C)cost of converting nitrogen to a useable form
(D)temperatures must be extremely high
(E)it is difficult to contain the end product
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