For a better bike's use of nature

Protect our environment, protect our nature. Everyone is using a very fuel-burning cars. Nature pollutes. 10% of car users in the world today, our natural cleaner used a bicycle would be a natural. But people do not understand the value of nature more. If I had a little knowledge about the nature of people used the bicycle over short distances. People running the car for a little distance. Pity pity beautiful world is being polluted.