The answer is C.
the ice is changing its state of matter but not its composition. it is still water, you just have to freeze it up again.
hope this helps!
Answer:
Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're ... Group A is given the special juice to drink while they work. Group ... 1. Control Group. Group B. 2. Independent Variable. volume of special juice.
Explanation:
<span> endothermic is the answer
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