Question

List two major harmful effects of each of the following :

1) Rivers contaminated with sewage

2) Too much gaseous exhaust containing CO2 and SO2

3) Pesticides such as DDT used in agriculture

4) Prolonged noise such as the one produced by crackers

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Answer 1

1 a. Water borne diseases

b. Biological magnification

2.a Acid rain

b. Respiratory diseases

3.a biological magnification of pesticides leading to cancer of small intestibe and stomach

b increase or decreses of pH of soil

4.a noise pollution

b in longyerm leads to hearing impairment

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Answer 2

Answer:

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Explanation:

1. Sewage disposed of into rivers that cause diseases such as diarrhea, dysentery, cholera, typhoid, and jaundice.
2. This is thought to cause global warming and affects the lungs.
3. This can affect non-target organisms in the farms and increase the risk of respiratory systems in humans.
4. The air and noise pollution's that are caused by firecrackers can affect people with health.