AP ENVIRONMENTAL: STRATOSPHERIC OZONE AND GLOBAL WARMING BARRON REVIEW WORDS AND DEFINITIONS
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| 165604683 | anthropogenic | of or related to the influence of human beings. | |
| 165604684 | biodiversity | the variation of life forms within a given ecosystem. | |
| 165604685 | chlorofluorocarbons | synthetic compounds containing carbon, chlorine, and fluorine that are used in refrigerants, propellants, the manufacture of foams, and cleaning solvents. | |
| 165604686 | flux | a flow or discharge. | |
| 165604687 | global warming | an overall increase in world temperatures caused by additional heat being trapped by greenhouse gases. | |
| 165604688 | heat island | the warm air found around and above an urban area, distinct from the air temperature above the surrounding rural land. | |
| 165604689 | methane hydrates | large amounts of methane trapped within a crystal structure of water, forming a solid similar to ice. | |
| 165604690 | ozone hole | a region of the stratosphere over Antarctica (and a smaller one over the Arctic) that is depleted of ozone in the local spring. | |
| 165604691 | permafrost | ground that is permanently frozen. | |
| 165604692 | photon | a discrete small quantity of electromagnetic radiation. All matter absorbs and emits photons. | |
| 165604693 | stratosphere | the region of the uppermost atmosphere where temperature increases along with the altitude due to the absorption of solar ultraviolet radiation by ozone. | |
| 165604694 | stratospheric ozone | a layer in Earth's atmosphere located in the lower portion of the stratosphere (from approximately 8-12 miles [13 km-20 km] above the surface) that contains relatively high concentrations of ozone (O3) and absorbs up to 99% of the sun's highfrequency ultraviolet light. | |
| 165604695 | thermohaline circulation | a three-dimensional pattern of ocean circulation driven by wind, heat, and salinity that is an important component of the ocean-atmosphere climate. | |
| 165604696 | troposphere | the lowest portion of Earth's atmosphere; contains approximately 75% of the atmosphere's mass and 99% of its water vapor and gasses. | |
| 165604697 | UVA | a long-wavelength ultraviolet ray from the sun. Known as the "aging" rays in the UV spectrum that can harm the skin. | |
| 165604698 | UVB | short-wave UV radiation that causes eye damage and skin cancer in humans and animals and damages the photosynthetic pathways of plants. | |
| 165604699 | UVC | shortest wavelength of ultraviolet radiation; contains the highest energy and poses the greatest risk to the planet. This wavelength of UV radiation is absorbed by the upper atmosphere (ozone layer) and does not reach the Earth's surface. |
