Edward Jenner discovered vaccinations he found that some of the dire Mary's who worked with cows have stuff for lesions on their hands in at these Dairy maids were immune to the more severe smallpox then he included James Phipps with material from the lesson of the dairy made hands which best explains why general decided to infect

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explanation:

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the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

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