How does an algal bloom affect aquatic plants and animals

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Reference no: EM133825552

Questions:

1. When is water safe to drink? Suppose you were hiking along a stream or lake and became very thirsty. Do you think it would be safe to drink the water? In many cases, it wouldn't. Each source of fresh water on or beneath Earth's surface is affected by contaminants.

2. What is pH level, what are its characteristics, and how does it contribute to pollution? What chemicals are used in treating low pH levels?

3. Water in an old building, tested recently, showed high copper and iron content, and low pH levels. A water reading taken 20 years before showed low pH levels, but only minimal traces of copper and iron. If none of the new buildings on the same street showed signs of metallic contaminants, but both old and new building show lower than normal pH readings, how might the high metal concentrations in the old building be explained?

4. What is the difference between a point source and a nonpoint source of pollution?

a. Which might be more difficult to control? Why?

5. What causes eutrophication and how does it affect DO?

6. The excess of which factor causes "blue baby" syndrome and why is this only of concern for households using well water?

7. The excess of which two factors causes an algal bloom?

8. How does an algal bloom affect aquatic plants and animals?

9. If coliform bacteria are typically not dangerous, why is it important to monitor water for their presence?

10. What is typically added to water to prevent the leaching of metals from pipes?

Reference no: EM133825552

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