What are the main types of environmental emergencies.

Environmental emergencies are divided into situations related to changes in land conditions; situations associated with changes in the composition and properties of the atmosphere; situations associated with a change in the state of the hydrosphere; situations associated with a change in the state of the biosphere.
Emergencies related to changes in the state of land (soil, subsoil, landscape) include:
• catastrophic subsidence, landslides and landslides due to the development of mineral resources as a result of mining and other human activities;
• the presence of heavy metals (including radionuclides) and other harmful substances in the soil (soil) in excess of the maximum permissible concentrations;
• intensive soil degradation, desertification in large areas due to erosion, salinization and waterlogging of soils;
• crisis situations associated with the depletion of non-renewable natural resources;
• critical situations caused by overfilling of storages (dumps) with industrial and household wastes, their environmental pollution.
Emergencies related to changes in the composition and properties of the atmosphere (air) include:
• sudden changes in weather or climate as a result of human activities;
• excess of maximum permissible concentrations of harmful impurities in the atmosphere;
• increase in air temperature over cities;
• lack of oxygen in the air of cities;
• a significant excess of the maximum permissible level of city noise;
• the formation of a vast zone of acid precipitation;
• destruction of the ozone layer of the atmosphere;
• significant deterioration in atmospheric transparency.
Emergencies associated with a change in the state of the hydrosphere (aquatic environment) include:
• a sharp shortage of drinking water due to depletion or pollution of water sources;
• depletion of water resources necessary for the organization of agricultural water supply and technological processes;
• violation of economic activity and environmental balance due to pollution of inland seas and the oceans.
To emergency situations related to changes in the state of the biosphere,
include:
• extinction of species of animals and plants sensitive to changes in environmental conditions;
• death of vegetation in large areas;
• a sharp change in the ability of the biosphere to reproduce renewable resources;
• mass death of animals.

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.