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Watch this video on dissolved oxygen and answer the following questions (on back

ID: 547029 • Letter: W

Question

Watch this video on dissolved oxygen and answer the following questions (on back):

https://www.youtube.com/watch?v=oVW5LAzd7Ec

What is the law that the narrator is describing that controls how much oxygen moves between the atmosphere and the water? The law governing this process is not mentioned in the video but we talked about it in class previously. Eutrophication occurs in water bodies when excessive nutrients, such as nitrogen and phosphorous enter a water body. Increased nutrients lead to increased growth of algae and nuisance aquatic weeds, which then decay and reduce the available oxygen in the water for aquatic organisms like fish. Describe (at least one sentence each) three possible sources of nutrients that may be of concern near a water body a. b.

Explanation / Answer

answer b) the causes of cocncern are the chemical industries which drain out harmful effleunts in the water body like mercury ,cadmium and lead . * also the drain from thermal plant and nuclear plant * the household waste dumped into drain can also cause a huge problem