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Why do you think pneumonia causes a symptom like fatigue? What substance is being limited that all cells require?

A. mucus
B. carbon dioxide
C. cilia
D. oxygen

2 Answers

2 votes

Answer:

D. Oxygen

Step-by-step explanation:

A lack of oxygen causes fatigue. As a person with asthma, I know this from experience. Lack of O2 causes dizziness, tiredness, headaches, etc.

User Matei Suica
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Oxygen is the answer hope it helps
User Stellard
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