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Environmental analysis is the use of examination and statistical methods to study the chemical and biological factors that determine the quality of an environment.[1] The purpose of this is commonly to monitor and study levels of pollutants in the atmosphere, rivers and other specific settings.[2] Also, to monitor amounts of natural and chemical components.[3] Other environmental analysis techniques include biological surveys or biosurveys, soil analysis or soil tests, vegetation surveys, tree identification, and remote sensing which uses satellite imagery to assess the environment on different spatial scales.