floods and droughts
DESCRIPTION
Floods and Droughts. Floods. Floods effect a lot of people. Floods are horrible for everyone. They kill and destroy houses and really break some peoples heart because of what they lose. - PowerPoint PPT PresentationTRANSCRIPT
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Floods and Droughts
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FloodsFloods effect a lot of people. Floods are horrible for everyone. They kill and destroy houses and really break some peoples heart because of what they lose. Floods happen when a river overflows. This is usually caused by a lot of rain or snow melting. When it overflows it carries something called sediment. This is great for farming so people build a town there so they can take advantage of this. Then the river overflows and usually kills what they grew. There is a couple ways floods are prevented now a days. The main one is probably dams. When it is the wet season they take water out. In the dry season they put that water back in.
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DROUGHTSDroughts happen when there is little rain in a certain area. Droughts are devastating to all the people in the area. They restrict water usage and kill crops and wildlife. It is horrible for farming. Some countries depend a lot on farming so droughts can be big deals. Droughts also then weaken the a economy. There is a lot of different beliefs on why/how droughts start. The aboriginals believe that if you start killing koalas there is a drought for ten years which is now being reinforced because there was a drought for ten years. Then some people just believe they are a natural recurring thing. This might be true too because Australia has had droughts on and off for years now. But now a days they have been getting worse and a lot of people believe it is because of global warming
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Pictures of fl oods droughts
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Thanks for listening
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