Definition: Sibilance is a sound characterized by pronouncing words with the letter 's'. In audio reproduction the letter 's' should sound clear and distinct, not smeared or distorted as in 'sh'.
High air pollution levels can cause immediate health problems including: Aggravated cardiovascular and respiratory illness; Added stress to heart and lungs, which must work harder to supply the body with oxygen; Damaged cells in the respiratory system
Landfill Gases. Air pollution from landfills is decreased because of recycling. A landfills emits a great deal of air pollution in the form of gases as its contents break down.These gases include carbon dioxide, methane, volatile organic compounds, hazardous air pollutants and odorous compounds that are nuisances for nearby residents. landfills emits a great deal of air pollution in the form of gases as its contents break down. These gases include carbon dioxide, methane, volatile organic compounds, hazardous air pollutants and odorous compounds that are nuisances for nearby residents.