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madreJ [45]
4 years ago
10

When heating a substance in a test tube, it is permissible to look into the test tube or to point the tube in the direction

Biology
1 answer:
My name is Ann [436]4 years ago
6 0

Answer:

False.

Explanation:

It's very dangerous.

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a. Arrow pointing inward (water goes into the cell)

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a. Arrow pointing outward (water goes out of the cell)

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a. Arrow pointing outward (water goes out of the cell)

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