(a) Exhaust gases and dust from industries such as; paper, sugar and cement industries.
(b) Exhaust emissions from motor vehicles.
(c) Some activities in the “Jua kali” industry such as burning tyres to get wires and threads.
(d) Nuclear reactors have become an important source of energy. But radiation from nuclear stations can pose a great danger to the environment as was seen during the Chernobyl nuclear reaction disaster of 1986 in USSR.
(e) Aerosols such as insecticides and perfume sprays containing chlorofluorocarbons (cfc) used as propellants. The CFC’s are gradually accumulating in the atmosphere and it has been proven that they react with the ozone layer depleting it. This means that man likely to be exposed to harmful radiations from the sun.
Kavungya answered the question on March 25, 2019 at 09:40
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An experiment on competition for oxygen was carried out and results were tabulated in the table below. Use information in the table to answer the...
(Solved)
An experiment on competition for oxygen was carried out and results were tabulated in the table below. Use information in the table to answer the questions that follow.
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Date posted:
March 25, 2019
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March 25, 2019
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March 25, 2019
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March 25, 2019
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March 25, 2019
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March 25, 2019
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March 25, 2019
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March 25, 2019
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Date posted:
March 25, 2019
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March 25, 2019
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March 25, 2019
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March 25, 2019
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Date posted:
March 25, 2019
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Date posted:
March 25, 2019
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March 25, 2019
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March 25, 2019
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Date posted:
March 25, 2019
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(Solved)
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Date posted:
March 25, 2019
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(Solved)
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Date posted:
March 25, 2019
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