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42 votes
42 votes
Hailey did 10 sets of sprints. When she relaxed afterward, her muscles started to feel sore.

Which of the following best explains what was built up in her muscles?

energy from cellular respiration
lactic acid from anaerobic respiration
alcohol from fermentation
carbon dioxide from cellular respiration

User GuitarExtended
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1 Answer

22 votes
22 votes

Answer:

lactic acid from anaerobic respiration

Step-by-step explanation:

User Tamir Gefen
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