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The Breathtaking Respiratory System
A pair of human lungs have around 600 million balloon-like structures called alveoli. These exchange the carbon-dioxide
4.4 (40 signals)$9.59Ages 9–11Virtual / Nationwide
A pair of human lungs have around 600 million balloon-like structures called alveoli. These exchange the carbon-dioxide waste in your blood for oxygen! Master Books resource: https://www.masterbooks.com/breathtaking-respiratory-system-paperback-single
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religious
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Religious Affiliation
christian
Subjects
electives
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