People burn fuels such as wood, oil, coal, or natural gas, or use electricity
to cook their food and warm their houses.
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Earth and Space Science: Properties of Earth materials Grades K-4, page 134 Earth materials are solid rocks and soils, water, and the gases of the atmosphere. These varied materials have different physical and chemical properties, which make them useful in different ways, for example, as building materials, as sources of fuel, or for growing the plants we use as food. Earth materials provide many of the resources that humans use. NSES Content Standard F
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