Inexhaustible Resources

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Inexhaustible resources are those resources which are present in unlimited quantity in nature and those resources which do not get exhausted or depleted by human activities. Inexhaustible resources are also known as renewable resources. These include air, clay sand, water and solar energy.

Some of the few inexhaustible resources are explained below:

1. Water Resources

Water is vital for sustaining life. It constitutes 70 - 80% of the fresh body weight. Food can not be assimilated without solublisation by water. It is also the medium of transport of nutrients within the body. Water is essential for agriculture, industries, generation of power and transport. Water covers 70% of the earth's surface but only 3% of this is fresh water. Of this 2% is present as polar ice caps and only 1% is usable water in rivers, lakes and subsoil water. Studies indicate that a person needs a minimum of 20 to 40 litres of water per day for drinking and sanitation.

2. Energy Resources

The sun is the primary source of energy in our lives. Solar energy is inexhaustible. Sun rays help plants to manufacture their food and give off oxygen which we breathe in. The sun's energy evaporates water from oceans, rivers and lake to form clouds that turn into rain.

Explanation on Inexhaustible Resources

3. Hydroelectric Power

It is virtually an inexhaustible resource. Electricity is generated by turbines that are run with the help of falling water. Water is impounded in large reservoirs called dams. Although hydro-electric power has led to economic progress but it has created serious ecological problems.

4. Solar Energy

It is an inexhaustible non-conventional energy resource. We have developed several mathods of tapping the energy for heating water and generating electricity. The common gadgets used for the purpose are solar cookers, solar air heaters, solar ovens, solar dryers, solr water heaters, solar coolers, solar refrigerators and solar furnaces. Solar photo voltaic (PV) cells directly produce electricity from sunlight. Solar radiations can produce high temperature, which can generate electricity.

Some Other Inexhaustible Resources

5. Wind Energy

It is an inexhaustible resource which has been used since ages for grinding grains, lifting water and propelling ships. India is considered to be the third largest producer of wind energy in the world. Wind power has low environmental impacts like bird kills, noise, effect on TV reception etc.

6. Tidal and Wave Power

These are small but inexhaustible resources. Tides moving into narrow areas like estuaries are suitable for power generation. Turbines can produce electricity both during rising and receding tides.

Wave Power converts the motion of waves into electrical or mechanical energy. Electricity can be generated at sea and transmitted by cables to land. This energy resource has yet to be fully explored.
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