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The safety and effectiveness of vaccines are under constant study. Because vaccines are designed to be given routinely during well-child care visits, they must be extraordinarily safe. Safety testing begins as soon as a new vaccine is contemplated, continues until it is licensed, and is monitored indefinitely after licensure.
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Species and genus. hope that helps
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Autotrophs are organisms that prepare their own food through the process of photosynthesis,
heterotrophs are organisms that cannot prepare their own food and depend upon autotrophs for nutrition.
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Answer:
Technology is necessary for scientists to perform experiments is the correct answer
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