Environmental Science Eligibility

Yes, you can fill form for respective course. First, you need to clear their respective entrance exams and you are applicable.

The candidate should have passed 10+2 with PCBE as compulsory subjects from a recognized Board/Council.
Candidates should possess a minimum 45% marks in the qualifying examination.

To get an admission into M.Sc Biotechnology and EVS, a student should have a minimum of 50 percent overall and should pass the entrance exam organised by the university.

Magadh University, Gaya
B.Sc. (Vocational Hons.) in Environmental Science
UG Degree | Full Time | Duration - 3 years
NAAC 'C' Grade Accredited
English Medium
Eligibility
Qualification: 12th
Minimum Eligibility to Apply: 40%
https://www.shiksha.com/science/course/b-sc-vocational-hons-in-environmental-science-magadh-university-gaya-274109

One can go for B.Sc or a B.E degree in Environmental Science. The minimum qualification required for this is 12th standard with Science subjects. The course duration is of three years.
Some universities require minimum pass percentage of 50% in PCM (10+2) level. Few reputed universities conduct entrance exams for admission into B.Sc. courses.
Selection is based on marks scored in the entrance test and marks scored in the 10+2 level.