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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
Answers: 2
Biology, 22.06.2019 06:00
What element is able to combine with itself and hydrogen to form large molecules ?
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Biology, 22.06.2019 13:00
The smallest parts of these that retain their original properties are called
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