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Environmental Change (Changes to the Land (SOIL DEGRADATION (causes of…
Environmental Change
Changes to the Land
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less than 1/4 of the worlds original forest cover remains intact, the 1/4 that does remain is put under increasing pressure
SOIL EROSION
is when soil is gradually worn away by natural phenomena such as rivers rain waves glaciers and wind
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SOIL DEGRADATION
loss of fertility of soil, often due to a chemical change
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ECOSYSTEM DECLINE
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decline in soil quality and degradation in ecosystems can lead to desertification, particularly in areas close to existing deserts
Changes to water
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about 70% of the total water taken from rivers, streams and underground water sources is used for irrigation and provide water to farm animals
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Changes to atmosphere
gases provide many of the requirements for life on earth, including nitrogen and fresh water
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burning of fossil fuels such as coal, electricity and and industry has changed the natural levels of
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