Read the given case and answer the questions that follow: Energy is a basic requirement for economic development. Every sector of the national…

Read the given case and answer the questions that follow : Energy is a basic requirement for economic development. Every sector of the national economy - agriculture, industry, transport, commercial and domestic - needs inputs of energy. The economic development plans implemented since independence necessarily required increasing amounts of energy to remain operational. As a result, consumption of energy in all forms has been steadily rising all over the country. In this background, there is an urgent need to develop a sustainable path of energy development. Promotion of energy conservation and increased use of renewable energy sources are the twin planks of sustainable energy. India is presently one of the least energy efficient countries in the world. We have to adopt a cautious approach for the judicious use of our limited energy resources. For example, as concerned citizens we can do our bit by using public transport systems instead of individual vehicles; switching off electricity when not in use, using power-saving devices and using non- conventional sources of energy. At last "Energy Saved is energy produced" ($\displaystyle 36.1$) Why is sustainable energy a key to sustainable development? ($\displaystyle 36.2$) Why is consumption of energy rising in all over India? ($\displaystyle 36.3$) Explain 'Energy saved is energy produced'.