What is the difference between increasing marginal returns and diminishing marginal returns?

The people of mozambique and zimbabwe would be most likely to be affected by a change in flow of which of these rivers? a) congo b) niger c) nile d) zambezi

Plz 20 ! in a citizens elect the president as head of government separately from the legislature? a: parliamentary democracy b: communist state c: presidential democracy d: autocratic state

The judicial system of courts derives its powers from what article of the constitution