WHat branches of science fall under the environmental science umbrella?

Question

Go to Wikepedia...very good article on environmental science...they list sub-categories.

Depending upon what is being investigated, there are many; such as chemistry, biology, microbiology, engineering, oceanography, etc. You should be aware, however, that many of those branches will tell you that environmental science is actually just an extension of "their" field; for example, I know a number of chemists working on research projects that are environmental problems. And most of those chemists have been working on environmental problems for years.