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Research paper example essay prompt: Water Quality Lab - 269 words

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Water Quality - Lab#4 Lab #4 Oakland Ravine and Lake: Water Quality 1. The pH levels are fairly constant for inlet and outlet. The dissolved oxygen(dO), on the other hand, varies very much between the inlet and the outlet. The measurements of the pH and the dO of the water do not differ greatly. By comparing the two graphs given I can see that both the pH and the dissolved oxygen are lover in the winter.

I think this is related to the amount of sunlight that the water receives and also the temperature of the water. In the given maps the dO drops off very sharply at various points. I would assume this is a sign of eutrophication. That would also explain why in the winter the dO is much more steady up to a certain depth. The explanation being that the cold weather has killed off many plants, therefore the plants cant choke the oxygen supply.

PH NO3 DO(A) PO4 INLET 7.3 7.3 7.05 1.7 5.5 5.5 Over-range LAKE 7.8 7.8 7.64 1.5 9 9 .42 OUTLET 7.5 7.5 7.35 .9 6 6 .48 2. These organisms were found in the sample of water we looked at on the slide. I would say that the organisms are about the size of a fine pencil point. The look like specs in the water to the naked eye, but under the magnifying glass they look extremely detailed and large. I think I found a synedra and a copepoda.

Because these organisms are so small they must eat very small particles maybe from dead plants and animals in the water. They are probably just about the lowest on the food chain. Their existence most likely supports many other life forms. Science.

Related: water quality, food chain, dissolved oxygen, temperature, lake

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