Referát: Man and Nature

History: Human life depends all the time on nature. Thousands of years ago people lived thanks to nature. They found out that its power and products are useful for life. So that they cut wood to make a fire and shelter /prístešky/, picked wild fruits and killed animals for food and fur /kožušina/. They began with farming, building of houses and domestication of animals. Already at that time man took whatever from nature, but he did not do anything to recreate /obnoviť/ that part of nature. But later it was even worse. Population grew and people needed more for their lives. They discovered many products and techniques how to get from nature what they need, for example fertilizers /umelé hnojivá/, pesticides, electricity or vehicles, but, unfortunately, they were not interested that these activities damage nature. And now, in the 21st century there are more than 6 billion inhabitants on the Earth, which is in a big threat and future of humankind as well as future of Earth will survive only if we start to revitalize and to protect nature. Because the state of environment is critical.