Catskill Mountains,<span>Allegheny Mountains are in the appalachians or part of them</span>
A. For the south china sea! hope this helps!!
The biosphere is all living things on earth
The subject of science is very broad. With that being said, I think there is no official regulatory board that decides the branches of science. Scientific developments are products of joined efforts of different scientists. These scientists could rebuke another's work provided there is evidence. As long as the theory is generally accepted by the scientists and no one rebukes it effectively, then it is a generally accepted fact and everyone adapts it.
Hence, the answer is B.
