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Charlie hypothesizes that if he adds earthworms to a compost pile, it will decompose twice as fast as a compost pile without earthworms. Which of the following steps could compromise his experiment?

User Arefe
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2 Answers

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Can you list the steps?

User Eye Of Enigma
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I believe that if he added the Earth Worms, he could not mesure the time it takes to actually decompose the compost pile without the Earth Worms since it takes that long.
User Dusan Kovacevic
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