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Explanation:
<span>In mammals, air enters lungs through tubes called _____, which branch into smaller tubules called _____, which extend out to tiny air sacs called _____.
trachea; bronchioles; spongy tissue
>> bronchi; bronchioles; alveoli
bronchi; alveoli; gills </span>
Answer: It's the mitochondria.
Explanation:
The best and most correct answer among the choices provided by the question are the following
<span> people live longer human populations are larger people are more likely to move travel is easier and more convenient people can find mates from distant places people who move may change populations permanently</span>
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