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Term	Definition	See Also	Related Terms
Sustainable development	Development that meets the need of the present without compromising the ability of the future generations to meet their own needs	Sustainable agriculture, Development	Community development, Conservation (environment), Developed nations, Developing nations, Ecology, Environmental education, Natural resources, Physical environment
Teaching materials	Print and/or nonprint materials used in instructions	Instructional materials, Curriculum materials, Educational materials	Audiovisual aids, Course ware, Programmed instructional materials, Study guides, Educational resources, Educational technology, Resource materials
Trails	Nature trails, Pathways	Facilities	Adventure education, Camping, Conservation education, Outdoor education, Park design, Parks, Recreational facilities
Trees		Shade trees, Plants	Agronomy, Botany, Forestry, Ornamental horticulture, Wildlife
Turf management	Lawn maintenance	Ornamental horticulture, Pesticides, Fertilizers	Ground keepers, Land use, Landscaping
Urban environment		Environment, Pollution, Population growth, Urbanization	Air pollution, Water pollution, Urban population, Urban planning, Urbanization
Waste disposal	Act or process of discarding or throwing away unneeded or excess material including solids, oils, gases, chemicals and liquids	Waste management, Recycling, Sanitation	Air pollution, Biotechnology, Ecology, Environmental standards, Radiation, Waste water, Solid wastes, Wastes
Waste water	Used water carrying suspended or dissolved solids from farms, industries, businesses or homes	Sewage, Waste water treatment, Wastes, Water	Pollution, Recycling, Sludge, Solid wastes, Waste disposal, Water pollution, Water treatment
Wastes	Unneeded, discarded, or excess material including solids, gases, chemicals and liquids	Hazardous waste, Refuse, Solid waste, Waste water	Conservation (environment), Ecology, Hazardous material, Poison, Pollution, Recycling, Resources, Sludge, Waste disposal
Water pollution		Water pollution control, Acid rain, River pollution	Conservation(environment). Ecology, Environmental education, Environmental standards, Groundwater, Hydrology, Urban environment, Waste disposal, Water quality, Water resources, Water treatment
Water quality	Biological. Chemical and physical characteristics of water that influence its healthy and fruitful use	Clean water	Acid rain, Conservation (environment), Drinking water, Ecology, Environmental standards, Ground water, Health, Water. Water pollution
Weather	State of atmospheric conditions at any one place and time	Climate, Meteorology	Climate change, Climate control, Ecology, Environmental influences, Natural disasters, Thermal environment, Water, Wind
Wetlands	Low area with shallow water or water-soaked soils	Estuaries, Fisheries, Marine biology, Oceanography	Conservation (environment), Conservation education, Ecology, Environmental education, Habitats, Land use, Marine education, Soil conservation, Water, Water resources, Wildlife management
Wilderness	An environmental condition that is characterized by a naturally developed life community undisturbed by human activity	Outdoor activities, Outdoor education, Physical environment	Adventure education, Camping, Conservation (environment), Conservation education, Ecology, Environmental education, Land settlement, Land use, Natural resources, Wildlife
Wildlife	Animals and/or plants living in a natural (undomesticated or uncultivated) state	Endangered species, Animals, Biological sciences, Botany	Birds, Habitat, Natural Resources, Plant growth, Trees Weeds, Wilderness, Wildlife management
Zoos		Animal facilities	Aquaria, Educational facilities, Parks, Recreational facilities, Wildlife management