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

بواسطة

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

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