Hello,
Yes, you can do masters in environmental science after bsc.
e eligibility for 2 years M.Sc. Environmental Science is B.Sc. Environmental science or a bachelor's degree in any discipline of science namely zoology, botany, physics, chemistry, biology, agriculture science etc. Work experience is preferred by some institutes for the MSc course and some institutes conduct entrance examinations as the curriculum of the courses may vary from institute to institute. Candidates with master degree in environmental science can opt doctoral and post-doctoral courses like M.Phil and Ph.D and can become environmental scientists. Ph.D courses are offered by Post Graduate Studies and Research, Hyderabad and Osmania University.

I hope this would help you. For further queries please feel free to write me down in the comment box.

Dear Alka,

Yes, you can definitely do masters in environmental science after bsc. 

Regards