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| an increase in the average temperature of the Earths atmosphere |
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| the trapping of the suns heat by gases in the Earth's atmosphere |
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| any gas in the atmosphere that contributes to the greenhouse effect |
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| suels such as coal, oil and natural gases |
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| the process in which farmland becomes less produuctive because the land is degraded. |
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| using natural resourses in a way that they exist for future generations. |
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| a gas composed of carbon and oxygen |
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| substancec discharged into the air |
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| the time during the year when the sun reaches the farthest point north and/or the farthest point south in the sky |
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| on of the two days in the year when the suns rays ar eover the equator and the days and night are equal around the world |
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| the condition of the earth's atmosphere at a given time and place |
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| the tuypical weather conditions of the earth's atmosphere at a given time and place |
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| falling water droplets in the form of rain sleet or snow |
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| an area that has similar plants |
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| a vegitation region with a mix of grassland and scattered trees |
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| a region with plants specially adapted to dry conditions |
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| one of the seven large land masses on earth's surface |
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| a large rigid section of earth's crust that is in constant motion |
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| a sudden movement of the earth's crust followed by a series of shocks |
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| a zone of volcanoes around the pacific ocean |
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| an opening in earth's crust from which molten rock and dust and ash are shot out of |
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| the gradual phycical and chemical breakdown of rocks on the earth surface |
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| the wearing away and movement of weathered materials by water wind or ice |
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| pieces of rock in the form of sand stone or slit deposited by wind water or ice |
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| a large slow-moving mass of ice |
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| the area drained by a major river |
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| water found beneath the earths surface |
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| the circuulation of water between earth oceans and the atmosphere |
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| a feature on the earths surface formed by a phycical force |
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| a broad flat area of land higher than the surrounding land |
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| the difference in elevation of a landform from it lowest point to it's highest point |
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| th esubmereged land at th eedge of a continent |
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| the layer of gasses that surround the earth |
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