The flowchart illustrates the production of glass by recycling wasted glass bottles.

There are altogether three stages in the recycling process.At the first stage,wasted glass bottles are gathered in the collection point and transported for further process by truck. At the next stage,those wasted glass bottles are washed in high-pressure water. After the cleaning,bottles are divided in terms of their colors,and the normal classifications include clear,green and brown.The bottles in the same colors are sent to a glass factory and broken into glass pieces丄ater,the pieces are burned in fire at the temperature of 600°C-800°C in furnaces. After being burned,the pieces are changed into liquid.And then,both of the recycled liquid glass and the new liquid glass from other sources are shaped in glass moulds to produce new bottles.At the final stage,the new glass bottles are used to contain products ready for sale in the supermarkets.

To sum up,the recycling process of glass bottles are quite complicated.However,it's definitely necessary as it is essential for environment protection.