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- Renewable energy (27996 bytes)
1: ... fuels nor nuclear power are considered to be renewable. For a discussion of this, please see the [[#...
3: ...source. [[Fossil fuel]]s, while theoretically renewable on a very long time-scale, are exploited at r...
5: ...ells, or production of fuels such as ethanol from biomass (see [[alcohol as a fuel]]).
7: ...alorie|megacal]] or 41,868 MJ of energy.[http://www.iea.org/Textbase/stats/unit.asp]
9: ...enewable energy use in modern societies see [[Renewable energy development]]. - Wind power (27669 bytes)
1: ...loyment of wind turbines to generate [[electric power|electricity]].
3: ...power_map.gif|thumb|300px|Map of available wind power over the United States. This type of undetailed...
5: == Wind energy ==
7: ''Main article: [[Wind]]''
9: ...er 160 km/h (100 mph) are common. Eventually, the wind energy is converted through friction into diff... - Biofuel (7929 bytes)
1: ...products, such as manure from cows. It is a [[renewable energy]], unlike other [[natural resource]]s ...
2: ...o the atmosphere by using them to replace non renewable sources of energy.
4: ...spectively, of their energy needs with bioenergy. Biomass can be used both for centralized production of el...
10: There are many forms of solid biomass that are combustible as a fuel<sup>[[#References|...
11: * [[Wood]] — see [[wood fuel]] - Coal (13357 bytes)
1: ...s the most common source of [[electricity]] world-wide. In the [[United States]], for example, the bu...
7: ...em (in London there is still a sea-coal road/lane where the coal merchants conducted their business)....
9: ...iction, and loss unless they are burning brightly when the symbol gives promise of uplifting and adva...
15: ...he greatest coal-forming time in geologic history was during the [[Carboniferous]] era (280 to 345 mi...
24: ...se at current rates (see World Coal Reserves, below). - Cellulose (2147 bytes)
6: ...ellulose]], historically used in [[smokeless gunpowder]].
8: ...uminant]]s and [[termite]]s, can digest cellulose with the help of [[symbiosis|symbiotic]] micro-orga...
10: ...e recently [[Modal]], a textile derived from beechwood cellulose.
12: Cellulose is also used within the laboratory as a solid-state substrate fo...
17: ...rength. This strength is important in cell walls, where they are meshed into a carbohydrate ''matrix'...
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