I have passed my 12th commerce stream this year and what can i do to go in wildlife,forest or geological field and give the list of college

I am a sports person,scored 72 in best of commerce subjects.school name st marys convent nainital wanted to go for clat but dint qualify got 72 in clat entrance without coaching what can i do to get the career of forest,wildlife or geology and what are the related colleges but i m intrested in law