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Vikentia [17]
3 years ago
12

A student put the powder to the corom board . Sciencetific reason for adding powder is ,

Biology
1 answer:
kondaur [170]3 years ago
8 0

Answer:

B or D

Explanation:

think of it how you use chalk on a chalk board, its less friction using chalk instead lets say a marker on a white board.

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