Question

Your teacher and parents must have told you to save water and switch off lights whenever not in use. Why do you think we should save water and electricity? We should conserve energy?

Answer 1

Part 1.

1. We have a limited source of usable water if we waste the water then we don't have water to use.
2. There is a very limited source of fuel from which we can make electricity. If we waste the electricity then we don't have electricity to use

Part 2

1. According to the law of conservation of energy, energy can not be created and can't be destroyed. we only can change the form of the energy.
2. So we have a limited source of the energy.
3. If we waste the energy then might be we don't have any energy source remain for the future.