Nitrogen-fixing bacteria making nitrogen available for use by other
organisms to utilize is an example
of..
A. mutualism.
B. commensalism.
C. decomposition

The nitrogen fixation bacteria makes the nitrogen available for the plants directly into the soil. This is an example of mutualism, where both bacteria and organisms are benefited.

Hence mutualism is the end product of the interaction. This option A is correct.

link.

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try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

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