Air Quality (C1 OCR 21st Century Science)

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Air Quality
- Amounts of gases in the air
  - Oxygen:21%
  - Nitrogen: 78%
  - Carbon Dioxide: 0.037
  - Argon: 0.9%
  - Water vapor varies due to wheather and climate
- Pollutants
  - Greenhouse gases
    - Carbon Dioxide (CO2) is the primary greenhouse gas produced by man.
    - Methane (CH4) is another gas that is being produced by man. Landfill sites produce a huge quantity of it. Methane has more potential for trapping heat, around 25x more!
  - Sulpher dioxide (SO2) causes acid rain, which is where rain has such acidic content that it damages trees and animals severly.
- Natural pollution
  - Volcanoes create a large amount of gases, including CO2 and SO2.
  - Animal digestive systems produce small quantitys of methane.This includes cows.
Methane (CH4) is another gas that is being produced by man. Landfill sites produce a huge quantity of it. Methane has more potential for trapping heat, around 25x more!
Volcanoes create a large amount of gases, including CO2 and SO2.

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