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Nest (n) A shelter made by a bird for
holding eggs and young.
Native (adj) originating, living or
growing naturally in a certain region.
Nitrogen Dioxide (n) - A Criteria Pollutant Nitrogen Dioxide, which is a primary component of NOx, is produced when fuel is burned in motor vehicles, power plants, industrial boilers, and other sources. Non-renewable energy (n) a source of energy that is limited
and cant be replaced in a short period of time (such as oil,
coal, natural gas and nuclear energy).
Nuclear energy (n) a non-renewable source of energy that
comes from splitting the atoms of the element uranium.
Nutrient (n) any substance absorbed or eaten by living things
that helps them grow.
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