Interest Rates as of 4/19/2017. A 30-year loan in which the interest rate does not change during the entire term of the loan. $. (2) This is an adjustable rate loan so monthly payments and interest paid will change.
Air Pollution Sources. Air pollution comes from many different sources. Natural processes that affect air quality include volcanoes, which produce sulfur, chlorine, and ash particulates. Wildfires produce smoke and carbon monoxide. Cattle and other animals emit methane as part of their digestive process. Even pine trees emit volatile organic compounds (VOCs).
Lesson Summary. Air pollution is the release of air pollutants into the atmosphere. Those pollutants may be gases or particulate matter and can come from a variety of sources. The two types of pollution sources, point source and non-point source, describe how the pollutants enter the air, either from a single source or from many different sources.