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Please help with this question!
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5 votes
Please help with this question!

Please help with this question!-example-1
User Hajo Kirchhoff
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2 Answers

5 votes

Answer:

the answer is oxygen

Step-by-step explanation:

User Csgeek
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2 votes

Answer:

Oxygen for the first box, and lactic acid for the second

User Ketan Akbari
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