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Gnoma [55]
3 years ago
9

A b or c or d please help

Biology
2 answers:
Xelga [282]3 years ago
7 0

It would be B. the mixture became warm, as a change in temperature is certain evidence that a chemical reaction has taken place.

Ivanshal [37]3 years ago
3 0

Answer:

It could be that the mixture became warm.

Explanation:

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