Unit 1 Man has a blood tie with nature and nobody can live outside nature. Nature provides us with everything we need: the air we breathe, the water we drink, and the food we eat. For quite a long time after man began to live in the realm of nature, he lived in fear of its destructive forces. He used to regard nature with its elemental forces as something hostile to him. And even the forest was something wild and frightening to him. Very often, he was unable to obtain the merest daily ne
