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The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.
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Biology, 22.06.2019 13:30
How does the color of light affect the germination time (amount time a plant takes to develop) of a radish seed?
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To what does “descent with modification” refer?...
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