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In a grassland ecosystem, organisms of the same species eat the same food. When there is a lack of rain, which is most likely increased?

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What do earthquakes tell scientists about the history of the planet?

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A student is investigating changes in the states of matter. The student fills a graduated cylinder with 50 milliliters of packed snow. The graduated cylinder has a mass of 50 grams when empty and 95 grams when filled with the snow. The packed snow changes to liquid water when the snow is put in a warm room. Which statement best describes this process?

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Both hurricanes and tornadoes always ___.