SCIENCE
EARTH SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It can decrease the risk of water pollution in an area
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It can increase the risk of flooding in an area.
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It can decrease the need for natural resources in an area.
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It can increase the number of invasive species in an area.
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Detailed explanation-1: -Urban flooding is significantly different from rural flooding as urbanization leads to developed catchments, which increases the flood peaks from 1.8 to 8 times and flood volumes by up to 6 times. Consequently, flooding occurs very quickly due to faster flow times (in a matter of minutes).
Detailed explanation-2: -The changes in land use associated with urban development affect flooding in many ways. Removing vegetation and soil, grading the land surface, and constructing drainage networks increase runoff to streams from rainfall and snowmelt.
Detailed explanation-3: -Human factors increasing flood risk: urbanisation, because towns and cities have more impermeable surfaces. deforestation, because removing trees reduces the amount of water intercepted and increases run-off.
Detailed explanation-4: -Flooding of urban areas can result in significant damage to private property, including homes and businesses. Losses occur due to damage to both the structure and contents of buildings. Insurance of the structure and its contents against flooding can reduce the impacts of floods on individuals or companies.
Detailed explanation-5: -It can be caused by flash flooding, coastal flooding, river floods or rapid snow melt.