The coexistence of living and non-living things in nature in order and harmony with their environment is called natural balance. In this balance, plants clean the air, prevent erosion, enrich the soil, and provide shelter and nutrition for other living creatures. Animals also play an important role in maintaining the natural balance by feeding on plants and each other and forming the links of the food chain.

Fungi and microscopic creatures enable waste materials to be decomposed and mixed into the soil. Climate change, unplanned urbanization, transportation activities that harm nature, environmental pollution, excessive use of natural resources, use of non-renewable resources, war, nuclear weapons and nuclear power plant explosions, excessive use of pesticides and fertilizers such as insecticides, excessive hunting, damage to forests.

The increase in waste due to waste and rapid population growth has led to a decrease in biological diversity, the extinction of species, and the deterioration of the natural balance. Invasive species that leave their habitats and come to new habitats, some of them die due to pollution of their habitats; This balance can be disrupted by human-made disasters such as forest fires, erosion, epidemics, or natural disasters such as earthquakes, hurricanes, floods, long-term droughts, tsunamis, and volcanic eruptions.

For example, the bombing of forests during the Vietnam War caused many species to lose their habitats. Today, the destruction of trees and vegetation under the name of industrial development, the expansion of asphalted areas, and the change in the way we use land cause great harm to the ecological balance. At the same time, due to increasing urbanization, a lot of water is needed to meet the needs of the people, which has led to deeper wells being drilled or water being transported from distant places.