Science

What type of lens has a thin middle and makes objects appear smaller?

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What would you do to a bucket of sand and water to separate one from the other?
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What is the liquid component of blood known as?
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When a dog repeats a learned behavior and gets a reward, what process is shown?
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What is the result when you reduce a ketone?
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What are the Southern Lights called?
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Which Apollo mission were Edward White and Gus Grissom selected for?
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Which planet in Earth's solar system has the largest diameter?
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During the seventeen hundreds, what creature was thought to excrete blood through its skin?
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