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Alex
4 years ago
14

Until the middle of the 20th century, doctors sometimes suggested that

Biology
1 answer:
gizmo_the_mogwai [7]4 years ago
4 0

Answer:

B.

Explanation:

cigarettes are legal so c is out. smoking does not aid digestion d is out. New studies definitely changed people's minds about cigarettes so the only option left is B.

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Unequal sharing of electrons between atoms
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Explanation:

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