World Geography
Which of the following rivers is called “Father of African Rivers”?

Gambia River
Yobbe River
Niger River
Nile River

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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 of rotation of moon
None of these
the period in which the moon completes an orbit around the earth

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