Why are rivers and deltas important?
Water and food: Rivers are an important source of irrigation, food and agricultural irrigation. The river water replenishes the lake and transports fertile sediments, making the floodplain and swamp fertile.
Transportation: Rivers play an important role in transportation and business development, and are also an important source of energy.
Species: Rivers and deltas provide important habitats for fish and other freshwater animals such as amphibians and shellfish.