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In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?
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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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How does science influence the decisions made about social, economic, and political issues?
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What organelle breaks down and recycles worn out cells?...
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