what makes a gas a greenhouse gas

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  • How do gases in the atmosphere sustain life on Earth?

  • Much like the glass of a greenhouse, gases in our atmosphere sustain life on Earth by trapping the sun鈥檚 heat. These gases allow the sun鈥檚 rays to pass through and warm the earth, but prevent this warmth from escaping our atmosphere into space.

  • Which gases trap heat in the atmosphere?

  • Gases that trap heat in the atmosphere are called greenhouse gases. This section provides information on emissions and removals of the main greenhouse gases to and from the atmosphere. For more information on the other climate forcers, such as black carbon, please visit the Climate Change Indicators: Climate Forcing page.

  • What gas keeps the earth warm?

  • Greenhouse Gases Greenhouse gases are gases鈥攍ike carbon dioxide (CO 2), methane, and nitrous oxide鈥攖hat keep the Earth warmer than it would be without them. The reason they warm the Earth has to do with the way energy enters and leaves our atmosphere. When energy from the sun first reaches us, it does so mainly as light.

  • How do humans produce ozone gas?

  • Humans produce this gas through industrial plants, chemical solvents, and burning fossil fuels. Prior to industrialization, tropospheric ozone was concentrated at 25 parts per billion in the atmosphere. Today, it is at approximately 34 parts.

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