For producing electricity, the energy from flowing water is preferred to energy obtained by burning coke. State two reasons for it.

In case of hydro power plant, flowing water causes the turbines to rotate and the water can be refilled due to rains and hence Hydro energy is considered to renewable source of energy. Moreover, hydro energy does not release any kind of environmental pollutants.

Coke, on the other hand, belongs to the category of non-renewable sources of energy and also leads to the evolution of gaseous pollutants.