Define the following
A. Drainage system
B. perennial rivers
Answers
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A.In geomorphology, a drainage system is thepattern formed by the streams, rivers, and lakes in a particular drainage basin. ... Adrainage basin is the topographic region from which a stream receives runoff, throughflow, and groundwater flow.
B.Perennial rivers are the rivers which remain filled with water throught the year, as opposed to seasonal rivers in which water flow only during rainy season. Whether a riveris perennial or seasonal depends on its geographical location. Equatorial rivers areperennial as they recieve rainfall throughout the year.
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Answer: a) drainage system refers to the origin and development of stream through time.
B) perennial rivers are the rivers in which water remain throughout the year. For example Himalayan rivers are perennial rivers.