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Question generated: In a container, a mixture of water and salt is stirred so that the salt dissolves completely. Sand is added to this solution and allowed to settle to the bottom of the container. If the container is placed on a heat source and the liquid evaporates completely, what will be left in the container?

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Question generated: Which biological activity occurs in a repeated rhythm?

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Question generated: The cell cycle describes the processes that take place as a cell

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Question generated:
Alicia gives her brother a push while he is seated on a swing. She finds that after a few seconds, she needs to push again to keep him going. The reason her brother slows down is because the mechanical energy is converted into