What changes in nature are called man-made and why? What forms of human influence on the biosphere do you know?

Anthropogenic changes in nature are changes that occur as a result of human production and non-production activities. These changes are divided into two categories:
• deliberate transformations (land development for agricultural land, construction of reservoirs, construction of cities, industrial enterprises, drainage of swamps, etc.);
• associated changes (changes in the gas composition of the atmosphere, environmental pollution, smog formation, acceleration of metal corrosion).
Human exposure affects all resources and components of the biosphere (soil cover, hydrosphere, atmosphere, animal and plant world, lithosphere). Four main forms of human exposure to the biosphere can be distinguished:
• changes in the structure of the earth’s surface (plowing of virgin lands, deforestation, drainage of swamps, the creation of artificial reservoirs);
• changes in the composition of the biosphere, the cycle and balance of its constituent elements (mining, creation of dumps of developed rocks, emissions of various substances into the atmosphere and hydrosphere, change in moisture circulation);
• change in the energy (in particular, thermal) balance of the regions and the planet as a whole;
• changes made to the biological diversity of the world (extermination of certain organisms, the creation of new species of animals and plants, the movement of organisms to new places).

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