We are asked whether the given are Physical or Chemical changes:
Physical or Chemical?:
A) Frost forms as the temperature drops on a humid winter night.
B) A cornstalk grows from a seed that is watered and fertilized.
C) Dynamite explodes to form a mixture of gases.
D) Perspiration evaporates when you relax after jogging.
E) Perspiration evaporates when you relax after jogging.
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What scientific concept do you need to know in order to solve this problem?
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