This is false. different sides have different histories
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.
Should probably look this up?
Answer: Lake Victoría is the body of water that became the primary reservoir of the Nile River.
Explanation:
The dam on Lake Victoria was built in 1954 and was called Owen Falls, is situated in Uganda and is located just where the water from the lake flows into the Nile River. Its main purpose is the prevention of flooding and it is the first reservoir that It has the Nile river.
In addition to this reservoir, the Nile river flows through the Grand Ethiopian Renaissance Dam in Ethiopia and The Aswan High Dam in Egypt.
I hope this information can help you.
I think that a) is chemical, and b) would be chemical
