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the trapping of the sun's heat energy by certain gases in the atmosphere, e.g. carbon dioxide and methane that result in global warming.
an extreme shortage of food over a large area which affects a large number of people.
the area that occurs between the high water and low water marks. It is exposed to the air at low...
the fluid that circulates through the lymphatic system. It is similar to blood plasma in...
chemicals used as the propellants in aerosol sprays, as coolants in fridges, air conditioners...
molecule that forms when carbon dioxide attaches itself to the amino group of a haemoglobin...