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The alveoli are tiny air sacs in the lung. They have a relatively large surface area and thin walls. This structure allows –
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Which of the following is not a defining characteristic of plants?
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Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point
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The alveoli are tiny air sacs in the lung. They have a relatively large surface area and thin walls....
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