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I really need this much help. I still don't get how this works. I only know that when you blow into a tube, you see what's inside
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2 votes
I really need this much help. I still don't get how this works.

I only know that when you blow into a tube, you see what's inside

I really need this much help. I still don't get how this works. I only know that when-example-1
User Rory MacLeod
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2 Answers

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Answer is B: blowing into the tube adds carbon dioxide to the water
User Avara
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4 votes

Answer: B

Explanation:carbon dioxide is used for photosynthesis

User Enverpex
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4.7k points
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