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Energy resources C26ES2

Greer C

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Across
1.energy sources that formed over geologic time as a result of compression and partial decomposition of plants and other organic matter.
4.production of two usable forms of energy at the same time from the same process
5.use of energy resources in the ways that are most productive
6.thin, transparent wafers made up of layers of boron and phosphorus enriched silicon
7.gasoline mixed with ethanol
9.energy produced by naturally occurring steam and hot water
10.plant material is compressed b weight of water and by other sediments above, it becomes a light, spongy material.
Down
2.involves global management of earths natural resources to ensure that current and future energy needs will be met without harming the environment
3.materials that are burned to produce heat or power.
8.a mixture of gases that includes 50 to 70 percent methane gas and 30 to 48 percent carbon-dixoide gas.

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