World Geography
Which among the following is the most important character of the ‘Goldilocks Zone ‘ of the space?

It is small region of the space which is extremely cold
It is a small region which is extremely hot and presence of most elements in vapor state
It is a region of space which is neither too hot nor too cold and has conditions which are a must for life
It is a region of space which is characterized by a lot of asteroids

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World Geography
The sidereal month may be defined as

None of these
the period of rotation of moon
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

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