ICSE Class 6 Answered
Global warming takes place when carbon dioxide (CO2) and other air pollutants collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth’s surface.
Generally, this radiation would escape into space, but these pollutants, which can last for years to centuries in the atmosphere, trap the heat and cause the planet to get hotter.
These heat-trapping pollutants specifically carbon dioxide, methane, nitrous oxide, water vapor, and synthetic fluorinated gases are called as greenhouse gases, and their impact on earth is termed as green-house effect.
Burning of fossil fuels such as coal, oil, gasoline, and natural gas, which results in the greenhouse effect, electricity production, industrial activity, vehicle emission, etc., are causes of global warming.