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    lung volume .. help with biology . first answer is best!?

    could someone answer these pleaase? if lung volume increases then air pressure decreases or increases? and if lung volume decreases then air pressure decreases or increases?
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    biology respiration question - FIRST ANSWER IS BEST!?

    do all these take involve external respiration? and which ones don't or do they all? 1 hemoglobin binds to oxygen to form ox-hemoglobin 2 hemoglobin releases carbon dioxide 3 carbon dioxide diffuses into the alveoli 4 carbonic acid dissociates into water and carbon dioxide 5 exchange of...
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    help with biology lab?

    for bio we got the results of this lab that was done using potatoes. there were 10, 10 gram potato slices added into 10 different beakers. each beaker had a different level of sucrose concentration. after 24 hours the weight(grams) was all different of the potato slices. the beakers with higher...
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    question about biology: water molecules..first answer is best!?

    List a few everyday observations that provide evidence of water molecules sticking together because of hydrogen bonding.
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