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Definitions (75)
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alternative fuel
Substitute for traditional motor vehicle fuels like gasoline and diesel.; includes biodiesel, ethanol, and compressed natural gas.
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biodiesel
A renewable fuel made from vegetable oils and animal fats that can be used in standard diesel engines with little or no modification.
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biodiversity
The variety of plants, animals and other living things in a particular area or region.
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carbon footprint
A measure of impact of human activities on the environment in terms of the amount of greenhouse gases produced, measured in units of carbon dioxide.
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carbon offset
The funding of projects that reduce overall greenhouse gas emissions in order to "offset" greenhouse gas emissions caused by an individual or organization.
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carbon sink
A part of the Earth that absorbs and holds onto carbon dioxide, such as oceans, soil and forests.
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certified organic
Certified to have been produced without the use of synthetic pesticides and fertilizers, sewage sludge, bioengineering, irradiation, antibiotics or growth hormones.
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common air pollution
Commonly found air pollutants that are not acutely toxic but that do pose a threat to human health because so many people are exposed to them over long periods of time.
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common water pollution
Nontoxic pollutants that are nonetheless harmful to humans and/or aquatic life (sediment, nutrients, pathogens and trash).
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community supported agriculture
A regional community of farmers and consumers that share in both the risks and the benefits of food production.
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