People do usually say that nature is our mother. It gives a person everything that is necessary for life, even though we don't always appreciate its gifts. What could be better than the warm sun, majestic mountains, and blooming trees in the spring? The world of nature is very rich and varied. There are hundreds of thousands of species, many of which we've never seen in our life.
We all used to live in a world that seems to be built by ourselves. We live in big houses equipped with high-tech consumer devices; we are able to travel long distances using cars, trains, and planes. We are able to know what is happening thousands of miles away, over the Internet or television. But all of this is secondary. We use the knowledge of the laws of nature and its power to create all these technologies anyway.
