Which accurately describes the relationship between cancer risk and exposure to mutagens? a) Cancer risk decreases when a person is exposed to mutagens because the risk of DNA mutation decreases as well. b) Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations increases as well. c) Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations decreases considerably. d) Cancer risk decreases when a person is exposed to mutagens because the risk of DNA mutations increases considerably.

Option B is correct

Which accurately describes the relationship between cancer risk and exposure to mutagens? Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations increases as well. Many different types of mutations can occur within the body.

Explanation:

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step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.