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Kisachek [45]
3 years ago
11

_____ is an essential lung-coating substance that keeps air sacs from collapsing.

Biology
1 answer:
lakkis [162]3 years ago
7 0
The answer is surfactant
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The atom is a isotope.
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Many organisms that live in the rocky intertidal zone are adapted to cling to the rocks to withstand the a. pounding of the wave
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