Hi,

Hope you are doing well!

Yes, after bsc in mathematics you can do msc in environmental science.Eligibility criteria for Msc environmental science:

• Candidate must have done their graduation in Science/Economics/ Engineering/ Mathematics/ Statistics/ Geography/ Geology , with a minimum average score of 60%.
• Candidates who have cleared BSc (Hons)/BSc (10+2+3) with a score of 50% marks or higher are eligible for Msc.
• Candidate must have cleared Higher and Senior Secondary levels of education from a high school, affiliated to a well-recognized board.

M.Sc in environmental science has a huge scope in both private and government sectors. Areas of employment include Food processing industries, Refineries, Distilleries and Fertilizer plants.

You can also visit this link for more information:

https://www.careers360.com/courses/environmental-studies-course

Hope it helps.

All the best for your future.