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).
Quick Answer. Air pollution comes from a wide range of sources, which are categorized into mobile, stationary, area and natural sources. Mobile sources include vehicles, trains and planes. Stationary sources include industries and oil refineries. Examples of area sources are cities and agricultural areas, while natural sources include volcanoes and wildfires.