Page 739 - Environment: The Science Behind the Stories

wind power A source of renewable energy, in World Trade Organization (WTO) Organiza- with both air and water. Compare zone of satu-
which kinetic energy from the passage of wind tion based in Geneva, Switzerland, that repre- ration.
through wind turbines is used to generate elec- sents multinational corporations and promotes zone of saturation The lower soil layers of
tricity. free trade by reducing obstacles to international an aquifer, beneath the water table, contain-
commerce and enforcing fairness among na-
wind turbine A mechanical assembly that con- ing pore spaces completely filled with water.
verts the wind’s kinetic energy, or energy of tions in trading practices. Compare zone of aeration.
motion, into electrical energy. worldview A way of looking at the world that
reflects a person’s (or a group’s) beliefs about zoning The practice of classifying areas for dif-
World Bank Institution founded in 1944 that ferent types of development and land use.
serves as one of the globe’s largest sources of the meaning, purpose, operation, and essence
funding for economic development, including of the world. zooplankton Tiny aquatic animals that feed
such major projects as dams, irrigation infra- on phytoplankton and generally comprise the
structure, and other undertakings. xeriscaping Landscaping using plants that are second trophic level in an aquatic food chain.
adapted to arid conditions. Compare phytoplankton.
world heritage site A location internationally
designated by the United Nations for its cul- zooxanthellae Symbiotic algae that inhabit
tural or natural value. There are over 900 such zone of aeration The upper soil layers above the bodies of corals and produce food through
sites worldwide. the water table, containing pore spaces filled photosynthesis.

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