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The thin, semi-permeable membrane that encloses a cell allows nutrients to enter and wastes to be

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Question generated: Which resource is considered nonrenewable?

Problem: Write a question you would see in a school textbook.

Answer: Which tool is used to determine how long it takes warm water to melt an ice cube?

question: Write a question you would see in a school textbook. OPTIONS:
- solidify at the surface of Earth.
- be eroded and deposited in layers.
- be formed from magma.
- change form when pressure is applied.
answer: In order for rocks to be classified as igneous, the rocks must

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Which of these describes a location where minerals are most likely to form?

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Air is made up of many gases. Which gas is found in the greatest amount?