The three R's are Reduce, Recycle and Reuse.
Reduce : This means that we should use the resources judiciously and check their misuse. We should save electricity by switching off unnecessary lights and fans. We should save water by repairing leak taps.
Recycle : This means that we should collect plastic, paper, glass and metal items and recycle this material to make required things instead of synthesising fresh plastic, paper, glass or metal.
Reuse : This is even better than recycling because it saves the energy which is spent at recycling a product. Things are used over and over again. For example, envelopes can be reused by reversing them.
