Answer:
Listed
Explanation:
Five common energy sources are
1. Coal and Petroleum
2. Nuclear energy
3. Geothermal power
4. Solar
5. Wind
conservation of energy is very important in current situation of energy crisis. Efficient utilization of energy sources must be one of the top priority of nations.
1. Procurement of alternate sources of energies to reduce dependence on convectional sources of energies.
2.vehicle running on electric and hydrogen fuels should developed so that sources of coal and petroleum are conserved.
3. Production of solar and wind energies should be on large scale so that their cost become cheaper and available for common people
a) The inscriptions provide us valuable information which could not be tampered or modified. Thus inscriptions are the most important sources for constructing the history of a particular region. Inscriptions are more important than coins in historical reconstruction.
b)Most of the kingdoms of the medieval period rose to power and fell frequently. This was because most of the kingdoms, empires were constantly engaged in power struggle amongst themselves.
