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.


C. cost of converting nitrogen to a useable form.

Biology & Microbiology

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Which molecules most easily diffuse across a cell membrane?

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A bacterial culture grown in a glucose-peptide medium causes the pH to increase. The bacteria are most likely

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