ScienceCâu 76 / 120
Which gas do humans primarily exhale as a waste product of cellular respiration?
a.Carbon dioxide
b.Oxygen
c.Nitrogen
d.Hydrogen
Giải thích
Cellular respiration produces carbon dioxide as a waste product, which humans exhale. Oxygen is inhaled and used to help release energy from glucose.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
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