67.
The ionosphere contains ionized air that protects the earth from
A. the ultraviolet rays of the sun
B. the infrared rays of the sun
C. the falling meteorites
D. None of the above
Answer & Explanation
Answer: Option C
Explanation:
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68.
The horizontal of soil profile is composed of
A. weathered parent material that is not affected by translocation and organic modification
B. material affected by translocation & organic modification
C. unweathered bedrock
D. None of the above
Answer & Explanation
Answer: Option A
Explanation:
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69.
The largest city in Latin America is
A. Mexico city
B. Caracas
C. Rio-de-Janeiro
D. Buenos Aires
Answer & Explanation
Answer: Option A
Explanation:
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70.
The highest and lowest values of a weather element observed over the entire period of record are
A. extremes
B. average extremes
C. absolute extremes
D. relative extremes
Answer & Explanation
Answer: Option C
Explanation:
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71.
The highest mountain peak of Oceania is
A. Mt. Victoria, Papua New Guinea
B. Mt. Kosciusko, Australia
C. Mt. Cook, South Island (New Zealand)
D. Puncak Jaya, Indonesia.
Answer & Explanation
Answer: Option D
Explanation:
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72.
The length of the tropical years (the time interval between successive occurrences of the spring equinox) is decreasing very slowly as a result of
A. small, progressive changes in the earth’s rotational speed
B. small, progressive change in earth’s orbit around the sun
C. both (a) and (b)
D. None of the above
Answer & Explanation
Answer: Option C
Explanation:
No answer description available for this question.