In the past, man don't have to think about the protection of the environment. There were many people on the earth and nature material resources seemed to be unlimited. Today things are different. A world has become too crowded. We are using our natural materials too quickly. In the same time, we keep pollute our environment with dangerous chemicals. Dustbins are filled with cans and bottle that once held beer and coffee or Coca-Cola. Everywhere, people are always throwing away wrappings from food to clothes and all kind of unwanted things, some of them are difficult to get rid of.
