A. the rocks in the upper course are less resistant
B. the volume of the river is small
C. hanging valleys join the main valley as waterfalls to cause the gorges
D. the upper course has has a steep gradient
E. the water contains chemicals which dissolve the rocks
Correct Answer:
Option D – the upper course has has a steep gradient
Veterinary medicine is the branch of medicine that deals with the prevention, diagnosis, and treatment…
Anthropology is the scientific study of human beings and their cultures. It encompasses a wide…
Sociology is the scientific study of human society, culture, and behavior. It examines the social…
Social Work is a profession dedicated to helping individuals, families, and communities to cope with…
Religious studies is an academic discipline that explores the beliefs, practices, and history of various…
Public administration is the field of study and practice that focuses on the organization and…