Amount of charcoal produced on the destructive distillation of $1 \, kg$ of wood is about: (in $, kg$)

Choose the incorrect statement regarding wind power.

Give two examples of fossil fuels.

Enlist the energy changes taking place in a hydroelectric power station.

List some advantages of solar cells.

$(i)$ Distinguish between renewable and non-renewable sources of energy,giving one example of each.
$(ii)$ Why is the use of wood as a fuel not advised,although forests can be replenished?