Biology
In what season do the leaves of some trees turn colors and start falling to the ground?
More Questions from Biology
What hereditary disease allows large amounts of mucus to build up in the lungs?
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Which of these is not one of the four lobes in the hemispheres of the brain?
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What can be made from the particles of a dead virus to prevent the disease caused by that virus?
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What vitamin does the sun's ultraviolet rays help the skin produce?
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What vitamin refers to a family of related compounds called tocopherols?
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