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chlorofluorocarbon |
any of a group of compounds containing carbon, chlorine, and fluorine, which were once commonly used as refrigerants, solvents, and aerosol propellants but are now being phased out as they contribute to ozone depletion (abbreviated CFC.) |
cover crop |
a quick-growing crop planted to prevent soil erosion or soil depletion. |
drain |
a continuous and gradual depletion. [2/12 definitions] |
out |
into a state of depletion. [1/29 definitions] |
ozone depletion |
a steady decline in ozone in Earth's stratosphere, or a springtime decline in stratospheric ozone in Earth's polar regions. The primary cause of ozone depletion is man-made chemicals, particularly chlorofluorocarbons (CFCs). |
sustainable development |
a process of social and economic development that meets the needs of the present without compromising the ability of future generations to meet their own needs, esp. with respect to natural resource depletion and environmental pollution. |
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