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dem82 [27]
3 years ago
8

What are 2 controlled variables in this science experiment? If you answer something that makes sense, I'll give you brainliest!

Biology
1 answer:
Evgen [1.6K]3 years ago
7 0

Answer:

The amounts of the earth materials, and the height of the box on the ramp.

Explanation:

Hope it assists!

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