Factors affecting the environment Environment is dynamic and constantly evolves over time. These changes are initiated and maintained in a natural way by the so-called forces of nature, the result of human activity - the so-called anthropogenic factors. The forces of nature are simply factors that are derived from the process space (eh, formation of our planetary system, changes in the Earth and the Moons orbit, changes in solar activity, etc.), geological (eh, the formation of the earths crust, the processes sedimentation and erosion, continental drift, heterogeneity , transgression and regressions of the seas, balkanize etc.), climate (eh glaciation, warming, changes in the composition of the atmosphere and the ocean world, etc.) and biological (eh, organisms photosynthetic impact on the atmospheric composition and plant cover on soil organisms and processes, etc. globetrotter ). Changes in the natural environment are increasingly the result of human activities. Although our species exist on Earth for thousands years, but for a long time its impact on the environment is at approximately the same as any other vertebrate species. This effect has started to gradually increase, when about 10 thousand years BC introduced the cultivation of cereals and the rearing of animals.