Explain how color and light can be when determining concentration.

Color and light are one of the important things and helpful in determining concentration as they are able to show basis of whether the concentrations you have used is correct and accurate as the original effect on the experiment being conducted. They were able to provide differentiation of experiments and to be able to show the differences and which are the ones who are accurate and precise base on the given results.

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.