66.

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 and Explanation
Answer:C
Explanation: No answer description available for this question.
67.

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 and Explanation
Answer:A
Explanation: No answer description available for this question.
68.

The largest city in Latin America is
A. Mexico city B. Caracas
C. Rio-de-Janeiro D. Buenos Aires
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.
69.

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 and Explanation
Answer:C
Explanation: No answer description available for this question.
70.

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 and Explanation
Answer:D
Explanation: No answer description available for this question.