1. Hydrogen is a much cleaner energy source than CNG. CNG (compressed natural gas) is derived from biomass and hence burning the CNG causes air pollution; albeit on a much smaller scale than coal and petroleum. Use of hydrogen as energy source does not polluting gases.

    Hydrogen is a much cleaner energy source than CNG. CNG (compressed natural gas) is derived from biomass and hence burning the CNG causes air pollution; albeit on a much smaller scale than coal and petroleum. Use of hydrogen as energy source does not polluting gases.

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  2. Many sources of energy can be pollution free. When burning of biomass is not involved in production of energy, then there is no chance of pollution. For example; wind energy, hydel energy, solar energy, etc. are pollution free.

    Many sources of energy can be pollution free. When burning of biomass is not involved in production of energy, then there is no chance of pollution. For example; wind energy, hydel energy, solar energy, etc. are pollution free.

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  3. Advantages of nuclear energy are as follows: 1. A small amount of radioactive material can generate a huge amount of energy. 2. It does not produce air pollution. 3. A nuclear power plant is more efficient than other power plants.

    Advantages of nuclear energy are as follows:
    1. A small amount of radioactive material can generate a huge amount of energy.
    2. It does not produce air pollution.
    3. A nuclear power plant is more efficient than other power plants.

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  4. The energy which can be harnessed from the heat of inside of the earth is called geothermal energy.

    The energy which can be harnessed from the heat of inside of the earth is called geothermal energy.

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  5. Limitations of energy which can be obtained from the oceans: 1. These forms of energy can be harnessed only in coastal areas; which would leave a vast portion of the human habitation. 2. The technologies for harnessing them are still at experimental stage and hence are very costly and less efficientRead more

    Limitations of energy which can be obtained from the oceans:

    1. These forms of energy can be harnessed only in coastal areas; which would leave a vast portion of the human habitation.
    2. The technologies for harnessing them are still at experimental stage and hence are very costly and less efficient.

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