1. Environmental science is an interdisciplinary academic field that integrates physical, biological and information sciences (including ecology, biology, physics, chemistry, zoology, mineralogy, oceanology, limnology, soil science, geology, atmospheric science, and geodesy) to the study of the environment, and the solution of environmental problems.
2. Environmental science - the study of interactions among physical, chemical, and biological components of the environment.
https://en.wikipedia.org/wiki/Environmental_science (1.); https://en.wikipedia.org/wiki/Glossary_of_environmental_science (2.)