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Home > All Images > 1991 > July > 25 Jul 1991

Images Dated 25th July 1991

Choose from 5 pictures in our Images Dated 25th July 1991 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Illustration of the greenhouse effect Featured 25 Jul 1991 Image

Illustration of the greenhouse effect

Illustration of the "greenhouse effect". The build-up of certain gases in the Earth's atmosphere traps an increased amount of solar radiation and leads to a gradual warming of the whole planet. The "greenhouse" gases include carbon dioxide, methane, nitrous oxide and chlorofluorocarbons (CFCs). They are generated by a wide variety of human activities, including industry, the burning of fossil fuels, increased agriculture and modern agricultural methods, and deforestation. Global warming is expected to cause massive changes in weather patterns and a rise in sea level (due to the melting of polar ice) that could flood coastal cities and low-lying plains

© BILL SANDERSON/SCIENCE PHOTO LIBRARY