Astream flowing through or under a glacier can leave deposits of soil and rock in its path. after the retreat of the glacier, these deposits appear as a long, winding hill in the landscape, called esker. this is a case of on landscape structure.

This is a case of legacy effects of natural processes on landscape structure.

Explanation: Legacy effects of natural processes can be defined as environmental changes resulting from earlier disturbances by humans. This disturbance may be as a result of changes in land cover and land use, water diversions, introductions of chemicals, and other disruptions in natural systems, or combinations of these changes.

Literally, “legacy” refers to Something inherited from a predecessor or the past; a heritage.

the answer is:

c. islam and christianity

explanation:

islam and christianity are widely practiced in africa. islam is practiced due to its spread from the middle east into africa, and christianity is practiced due to the colonization of africa by the british empire.