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WHAT IS THE GREENHOUSE EFFECT

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Greenhouse gases are a natural part of the atmosphere. They absorb and re-radiate the sun’s warmth, and maintain the Earth’s surface temperature at a level necessary to support life. The problem we now face is that human actions — particularly burning fossil fuels (coal, oil and natural gas), agriculture and land clearing — are increasing the concentrations of the gases that trap heat and increasing the Earth's temperature.

The Greenhouse Effect

Greenhouse gases are a natural part of the atmosphere. They absorb and re-radiate the sun’s warmth, and maintain the Earth’s surface temperature at a level necessary to support life. The problem we now face is that human actions — particularly burning fossil fuels (coal, oil and natural gas), agriculture and land clearing — are increasing the concentrations of the gases that trap heat.

The Enhanced Greenhouse Effect

Greater concentrations of greenhouse gases will trap more heat and raise the Earth’s surface temperature. This is the enhanced greenhouse effect, which is the process behind climate change.

The Greenhouse Effect
The Enhanced Greenhouse Effect