How do you get a brain tumor?

Answer:
A brain tumor occurs when the nucleus in the brain cells stop telling the cell what to do and when to divide into 2 new cells. The cells start to randomly divide and its start to build up in the brain. The tumor then appears.
I hope this is useful because we just learned it in science!
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First answer by ID1453034801. Last edit by ID1453034801. Question popularity: 2 [recommend question].