World Geography
What is the proportion of insolation that is reflected back by the surface called?

Conduction
Albedo
Scattering
Radiation

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World Geography
The sidereal month may be defined as

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

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