Fossil fuels | Sun |
1. Fossil fuel is a non-renewable source of energy. | 1. Sun is a renewable source of energy. |
2. Combustion of fossil fuels causes lot of air-pollution. | 2. Solar energy is pollution free. |
3. Fossil fuels can be easily tapped. | 3. Solar energy is difficult to tap. |
Which of the following is not an example of a bio-mass energy source?
nuclear energy
coal
Compare and contrast bio-mass and hydro electricity as sources of energy.