When the gas exchanges are being made between the blood and the body exterior, it is called?
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How do nicotine and tobacco cause cancer? by decreasing blood-sugar levels by damaging or changing a cell's dna by increasing heart rate by increasing phlegm and mucous production
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The environments condition has an affect on the inhabitants true or false
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Which of the following is an important part of good posture? a. slumped shoulders b. arched back c. feet shoulder-width apart d. belly out
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