15)With the development of civilization man’s interference in nature grows up. It leads to different negative factors are: the pollution of water, air, soil and.. This problem must be solved if we want to preserve life on our planet.all countries of the world, all people, must take an active part in the protection of natural resources rationly. Factoriyes and plants must have purification systems to preserve the purity of water, air and soil.We must take care of plants, trees, animals, birds and fishes. We also have a Red Book where rare and dying out plants, birds, animals are registered.the role of people in the solution of ecological problems has greatly increased.The folowing radical measures must be taken
