Today, man is recovering after causing so much destruction in nature. He is trying to be environment friendly. Two tasks are most important to keep the environment clean. First, plant more and more trees to keep the air clean. And second, to minimize pollution. And in order to stop pollution, we can use bicycles instead of cars or any personal vehicle in our daily routine. This is a measure which has become very famous abroad and is now happening in India as well. Let's know what are