Human economic activity at the present stage increasingly demonstrates negative examples of impact on the biosphere. These include: environmental pollution, depletion of natural resources, desertification of land, soil erosion, disruption of natural communities, deforestation, extinction of rare species of plants and animals. Environmental pollution occurs through pollution of the atmosphere, soil, hydrosphere.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.