Using an example for each, briefly explain the following terms. (10 Marks) (i) Cleaner energy (ii) Cleaner technologies (iii) Photochemical reaction (iv) Global warming

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(a) Briefly explain the following terms in relation to environmental pollution, toxicology and
control. (10 Marks)
(i) Pollution
(ii) Environmental toxicology
(iii) Heavy metals
(iv) Persistence of lead
(v) Biodegradation
(vi) Bioremediation
(vii) Phytoremediation
(viii) Bioreactor
(ix) Antagonism by toxins
(x) Xenobiotic
(b) Describe five sources of atmospheric pollution. (10 Marks)
(c) Using an example for each, briefly explain the following terms. (10 Marks)
(i) Cleaner energy
(ii) Cleaner technologies
(iii) Photochemical reaction
(iv) Global warming
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QUESTION TWO – (20 MARKS)
Discuss the effects of heavy metals in organisms. (20 Marks)
QUESTION THREE – (20 MARKS)
Explain the process of creation of ozone holes. (20 Marks)
QUESTION FOUR – (20 MARKS)
You have been contracted by Bamburi cement company to advice on the appropriate air
pollution control method.
(a) Which two air control methods would you recommend? (2 Marks)
(b) Why do you choose the two air control options? (3 Marks)
(c) Briefly demonstrate how one of the two technique works. (10 Marks)

 

 

 

 

 

 

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