Hello Aspirant,
Environmental science is a great subject to study. Scopes and career opportunities are high in this field.

This a subject interconnected with all the science subjects like geography, physics, geology etc.

There is wide range of opportunities available for msc Environmental Science graduates in government sector. They can apply for the Scientific Assistant post in Pollution Control Board. They can also work as Environmental Consultant for Central or State government. They can also get job in Indian Forestry Services.
Hope it helps
All the best!