Question

When muscle cells run out of____________, they resort to lactic acid fermentation for a supply of energy. A. Carbon Dioxide B. Oxygen

Answer 1

Answer:

i think its b

Explanation:

sorry if im wrong

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Answer 2

Answer:

B oxygen

Explanation:

When your body runs out of oxygen, or your other systems can't deliver oxygen to your muscles quickly enough, your muscles convert the available glucose into lactic acid instead.