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12-12 Changes
By Jessica Kulhanek
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Last updated over 2 years ago
2 questions
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1
Question 1
1.
True
Required
1
A cub grows into an adult bear.
This is an example of an
irreversible change.
False
Question 2
2.
Select all of the changes that are
reversible
. You will choose 2 answers!
The burning of candle wax.
The melting of candle wax.
Baking cookie dough into cookies.
Mixing red and blue marbles in a bag.