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True/false: the northern hemisphere experiences winter when earth is farthest from the sun.
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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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Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm
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The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?
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True/false: the northern hemisphere experiences winter when earth is farthest from the sun....
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