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1) River pollution can affect people, wildlife and the environment. 

2) Loss of oxygen: River creatures and river plants need oxygen to ...

1) In the lower course of the river the gradient is gentler than in the upper course. The river has more energy and the volume amount of water is high.

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Hard engineering manages coastal zones in order to protect high-value areas from flooding or falling into the sea through erosion. These structures are usually high-cost and short-term. 

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Globalisation is the process of the worlds systems becoming increasingly interlinked. Advancements in technology has resulted in improved transport and communication systems which has increased flows o...

Limesone is a calcium carbonate and when rainwater mixes with carbon dioxide in the atmosphere it becomes weak carbonic acid.  Calcium carbonate is soluble in this acid and thus causing the process of ...