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Biology, 22.06.2019 05:50
The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes
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Biology, 22.06.2019 10:50
Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above
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___ is the process the body uses to break down food...
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