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In the 1600s, Galileo Galilei studied the moons of Jupiter. What did Galileo do to make better observations?

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A plant produces tiny plants around the edges of its leaves. When these tiny plants fall to the ground, they take root and become new plants. This process is an example of

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Which of the following is the best example of a custom-made product?

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Which scale is used to report the intensity of an earthquake?