greenhouse effect and global warming

• greenhouse effect

  • the process by which temperature on earth is kept high enough to support life by greenhouse gases absorbing radiation radiated by earth
• greenhouse gas

  • greenhouse gases keep temperatures on earth high enough to support life
  • water vapour, methane and CO2 are greenhouse gases
• carbon footprint

  • the total amount of carbon dioxide and other greenhouse gases emitted over the full life cycle of a product or event
• global warming

  • the increase of average temperature on earth