Substances Emitted into the Atmosphere by Human Activity

Carbon dioxide (CO2):

  • Because of its role as a greenhouse gas it has been described as “the leading pollutant” and “the worst climate pollution”.
  • Carbon dioxide is a natural component of the atmosphere, essential for plant life and given off by the human respiratory system.
  • CO2 currently forms about 405 parts per million (ppm) of earth's atmosphere, compared to about 280 ppm in pre-industrial times, and billions of metric tons of CO2 are emitted annually by burning of fossil fuels.
  • CO2 increase in earth’s atmosphere has been accelerating

Sulfur oxides (SOx):

Sulfur Oxides (SOx) - particularly sulfur dioxide, ....

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Bio–Diversity And Environment