QUESTION $3)(12$p$)$ Assume the river and the sediment transport in the river is initially in equilibrium. According to Lanes' river energy balance scheme explain what happens to the river when;

$0.$ The median diameter or the size of the sediment entering the river increases whereas the discharge is decreased while the other parameters are kept constant,

The median diameter or the size of the sediment entering the river decreases whereas the slope of the riverbed is increased while the other parameters are kept constant,

The riverbed starts to be steeper whereas the discharge is increased while the other parameters are kept constant,

The riverbed becomes flat whereas the discharge is decreased while the other parameters are kept constant,

The discharge in the river increases due to precipitation while the other parameters are kept constant,

The discharge in the river decreases due to drought conditions whereas the sediment transport is increased while the other parameters are kept constant,

The sediment amount entering the river increased whereas the discharge is decreased while the other parameters are kept constant,

The sediment amount entering the river decreased whereas the diameter of the sediment is decreased while the other parameters are kept constant,

The sediment amount entering the river decreased whereas the discharge is increased while the other parameters are kept constant,

The discharge in the river decreases due to drought conditions whereas the sediment size is increased while the other parameters are kept constant,

Consider the item number is $3.$