71.

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 and Explanation
Answer:C
Explanation: No answer description available for this question.
72.

The largest gulf in the world is
A. Gulf of Mexico B. Persian Gulf
C. Gulf of Carpentaria D. Gulf of Mannar
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.
73.

The hunting and gathering economy can support only
A. 1 person per sq. km B. 3 persons per sq. km
C. 5 persons per sq. km D. 7 persons per sq. km
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.
74.

The import of crude oil and petroleum done from national oil companies of producer countries, which have a net exportable surplus of oil is by
A. term contracts B. term tenders
C. monthly tenders D. All the above
Answer and Explanation
Answer:A
Explanation: No answer description available for this question.
75.

The land-sea distribution or the positions of the world's continents and major oceans influences
A. the major pressure belts that develop from the general circulation of the atmosphere B. the development of the mid-latitude cyclonic depressions, at the convergence zone between polar and subtropical air masses
C. both (a) and (b) D. None of the above
Answer and Explanation
Answer:C
Explanation: No answer description available for this question.