Draw a diagram to show that the energy flow in an ecosystem is governed by the law of conservation of energy.

The ultimate source of energy is —

1. wood
2. wind
3. water
4. sun

A natural source providing us energy continuously is called -

1. non-renewable
2. conventional
3. renewable
4. none of the above

The …………… energy of wind is called wind energy.

1. potential
2. chemical
3. electric
4. kinetic