jwilli4 jwilli4

18-01-2017
English

contestada

Which is not an example of energy transformations?
A.) A bicyclist pedals to school.
B.) a cars engine moves a car
C.) a sound wave travels across a hall
D.) the sun shines on a tree, and it produces more cells.

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kellt79 kellt79

18-01-2017

C) sound wave travels across the hall

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