Upper course: Rivers are narrow and carry little water., Rivers flow fast., In the mountains., SOURCE., Middle course: Rivers are wide and flow slowly., Rivers collect water from TRIBUTARIES., On plains., Lower course: Rivers are wide and flow very slowly., MOUTH., At the coast.,

River course theory

द्वारा

लीडरबोर्ड

दृश्य शैली

विकल्प

टेम्पलेट स्विच करें

ऑटो-सेव पुनःस्थापित करें: ?