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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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What are the methods of heat transfer? check all that apply. absorption conduction convection radiation reflection
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The relationship that results when organisms in an environment rely on each other for
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