Which statement best describes a negative effect of human activity on Africa’s waterways? Dams have changed river flows, which has led to erosion.
The use of rivers to water crops has led to droughts.
Population growth has led to the destruction of rivers.
The use of river transportation has harmed water quality.

In financial aspects, a depression is a sustained, long haul downturn in monetary movement in one or more economies. it is a more extreme monetary downturn than a recession, which is a slowdown in financial action through the span of a typical business cycle. a depression is an irregular and extreme type of recession. so depression is always followed by recession but it is not correct to state that a depression always follow a recession.