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Environment In Relation To Human Welfare - Questions and Answers

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21. A layer of non-circulating gases above the earth surface is
A. Stratosphere
B. Troposphere
C. Ozone layer
D. Atmosphere
Explanation:
22. The lower region above the earth’s surface is called
A. Atmosphere
B. Ozone layer
C. Stratosphere
D. Troposphere
Explanation:
23. Smoke combines with droplets of water to form
A. Water vapour
B. Smog
C. Soot
D. Fog
Explanation:
24. Polluted water is the main source of
A. Typhoid
B. Jaundice
C. Poliomyelites
D. All the three
Explanation:
25. Exposure to high radiation doses cause
A. Vomiting
B. Bleeding
C. Loss of hair
D. All the three
Explanation:
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