2.65 Natural resources

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Key to thesaurus abbreviations

Ecosystems [U]

SN The system of interdependent complex of plant and animal populations within a particular geographic content, generally an area of uniform environmental conditions.

NT1 Animal ecology [U]

    NT2 Animal migration [U]

RT Ecology [UH]

UF Food chains, Biological communities

Energy resources [U]

NT1 Electric power [U]

NT1 Nonrenewable energy sources [U]

    NT2 Nuclear energy [U]

NT1 Renewable energy sources [U]

    NT2 Hydroelectric power [U]

        NT3 Tidal energy [U]

    NT2 Solar energy [U]

    NT2 Steam power [U]

    NT2 Wind power [U]

RT Energy policy [U]

RT Fuels [U]

RT Power industry [U]

UF Power resources, Energy

Natural resources [U]

NT1 Food resources [U]

    NT2 Food shortages [U]

    NT2 Food supply [U]

        NT3 Food prices [A]

NT1 Marine resources [U]

NT1 Mineral resources [U]

NT1 Plant resources [U]

    NT2 Forest resources [U]

RT Nonrenewable energy sources [U]

RT Renewable energy sources [U]

RT Resources development [U]

RT Water resources [U]