6. The term ‘Abyssal refers to

A. Innermost part of the earth
B. Organism found in the shallow water zone of the seas
C. Deeper parts of the oceans
D. None of the above

7. The transport of warm air toward the poles and cold air toward the equator is due to

A. The temperature gradient
B. The development of waves
C. The latitude difference
D. The longitude difference

8. The traditional lands of the nomads of Central Asia are

A. Mongolia and Tibet
B. Sinkiang and Turkistan
C. Kirghiz steppe
D. All of the above

9. The time interval from when the given star passes directly overhead to when it next passed directly overhead, is defined as

A. One sidereal day
B. One solar day
C. Both the terms are similar, so any of these may be used
D. None of the above

10. The three recognized major fishing grounds of the world are located in the

A. Northern hemisphere only
B. Southern hemisphere only
C. Two in the southern hemisphere only and one in the northern hemisphere
D. One in the southern hemisphere only and two in the northern hemisphere