Which country is considered the first to produce alcohol-based fuel?

Observe the figures $A$ and $B$ given below and answer the following questions.
$(i)$ The power generation by the above two methods is non-polluting. True/False.
$(ii)$ List any two applications of solar energy.
$(iii)$ What is a photovoltaic cell?

Which of the following aquatic weeds has been exploited for biogas production?

Producer gas differs from biogas in having

The daily input of sunlight per square meter per day on the Earth is approximately:

Energy plantation refers to