The eligibility criteria for the M.Tech degree at Doon University, School of Environment & Natural Resources, Dehradun, requires candidates to have a Bachelor's degree in a relevant field such as Environmental Science, Forestry, Geology, Geography, Agriculture, or related disciplines with a minimum of 55% aggregate marks from a recognized university. Additionally, candidates may need to qualify in entrance exams such as GATE or university-specific exams. Relevant work experience in the field may also be considered during the selection process. Applicants must meet all eligibility requirements set forth by the university to be considered for admission to the M.Tech program.