World Geography
The sidereal month may be defined as

the period in which the moon completes an orbit around the earth
the period of rotation of moon
None of these
the period in which the moon completes an orbit around the Earth and returns to the same position in the sky

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World Geography
The periodic rise and fall of the sea level on the earth, gives rise to tides. This is related to

None of these
ultraviolet rays from the sun
the position of the moon with reference to the earth and the gravitational pull exerted mainly by the moon and partly by the sun
infrared rays from the sun

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World Geography
The process of evaporation of water in nature is one of the basic components of the hydrological cycle. The other process that is considered to be essential for the completion of hydrological cycle is the

flow tide and ebb tide in a river
flow of water in the sea
movement of water in the water table
movement of water vapour in the atmosphere

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