Water Pollution

4. a region or layer of the atmosphere in which the temperature stops decreasing with elevation and instead becomes warmer.
7. the introduction of chemicals, particulate matter, or microorganisms into the atmosphere at concentrations high enough to harm plants, animals, and materials such as buildings, or to alter ecosystems.
9. a condition in which people in a building suffer from symptoms of illness or become infected with chronic disease from the building in which they work or reside.
10. also called Los Angeles-type smog; a type of smog produced when ultraviolet light from the sun reacts with nitrogen oxides in the atmosphere.
11. combination of gases with water vapor and dust.
12. secondary air pollutants formed by the action of sunlight on nitrogen oxides and reactive hydrocarbons, their precursors.
14. compounds that have a high vapor pressure and low water solubility.
16. polluting compounds that come directly out of the smokestack, exhaust pipe, or natural emission source.

1. when a relatively warm layer of air at mid-altitude covers a layer of cold, dense air below.
2. forms when heat and sunlight react gases.
3. pollutants that have undergone transformation in the presence of sunlight, water, oxygen, or other compounds.
5. (CFCs) major source of chlorine in the stratosphere; are used in refrigeration and air conditioning, as propellants in aerosol cans and as “blowing agents” to inject air into foam products like Styrofoam.
6. a mixture of solid particles and liquid droplets found in the air.
8. also known as London smog; develops due to high concentration of sulfur oxides in the air.
13. a heat-resistant fibrous silicate mineral that can be woven into fabrics, and is used in fire-resistant and insulating materials such as brake linings.
15. derives from the massive combustion of coal and fuel oil in or near the city, releasing tons of ashes, soot, and sulfur compounds into the air.