A) Cosmic describes anything occurring or located in outer space
B) Lithosphere is the top crust of the Earth which includes the land surface and ocean floors
C) Silicon constitutes the second most important element in the composition of the Earth
D) A tributary is a river which leaves the main river and flows separately
Correct Answer: D
Solution :
A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not How directly into a sea or ocean. The opposite to a tributary is a distributary, a river or stream that branches off from and Hows away from the main stream.
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