Weekly Blog - 3/7 - 3/14

phys.org
Image - Summary - This week in science, we continued our investigation on the dying fish. Phosphates can harm fish by causing oxygen loss. Phosphates allow algae to grow, but too many phosphates in a body of water can cause algal blooms. Although fish eat algae, and many people would think that it is good for them, it isn't. Algae starts to rot, and then the rotting algae is eaten by bacteria. The bacteria continues to multiply as it eats the regrowing algae. The bacteria then steals all of the oxygen out of the water, therefore, leaving little to no fish and killing lot's of fish. We also investigated oil. Different oils have different patterns, just like fingerprints. Oils can float on water or sink to the bottom. Different oils include oil that is leaked out from cars, (fuel emissions) and refinery oil. I name those two because we looked at both of them.

SP3 - We tested water samples for phosphates. By finding out which water body/bodies have the most phosphates in them, we can track where the phosphates are coming from. We found that most of the phosphates are coming from the golf course. By using this information, we can find out who might be responsible for the dying fish. . We also used results of another investigation that was carried out by the autopsies. The autopsies sampled dead fish and found that, out of 50, 21 were killed by insufficient oxygen, while 14 were killed by oil, 8 by chlorine and 7 were unknown We can use the data from our tests to try to find the largest contributor for our essay..

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