Completion of first-year requirements, with no mark in these principal courses below 60%, including:
Biology 1001A or 1201A and 1002B or 1202B;
Chemistry 1301A/B and 1302A/B or the former Chemistry 1100A/B and 1200B;
0.5 course from: Environmental Science 1021F/G, or a 1000-level half course in Geography, or Earth Sciences 1022A/B, 1023A/B, 1070A/B, 1081A/B, or Physics 1028A/B, 1029A/B, 1301A/B, 1302A/B, 1401A/B, 1402A/B, 1501A/B, 1502A/B, or the former Physics 1026;
1.0 course from: Calculus 1000A/B or 1500A/B, Calculus 1301A/B or 1501A/B, Mathematics 1225A/B, 1228A/B, 1229A/B or 1600A/B, Statistical Sciences 1024A/B, Applied Mathematics 1201A/B or the former Calculus 1100A/B, Linear Algebra 1600A/B.
0.5 course: Biology 2483A.
0.5 course: Chemistry 2210A/B.
1.0 course: Environmental Science 3300F/G, 3350F/G.
0.5 course from: Biology 2244A/B, Statistical Sciences 2244A/B. Students may substitute Statistical Sciences 2035, 2141A/B or 2143A/B or Psychology 2810 for this 0.5 course. (Module will be 6.5 courses if Psychology 2810 or Statistical Sciences 2035 are taken).
0.5 course: Geography 2220A/B (strongly recommended) or a Geography half-course from the Environmental Science Course List
0.5 course at the 2000-level from Earth Sciences courses in the Environmental Physical Science Courses List.
2.5 additional courses from Environmental Science 4970F/G or the Environmental Science Course List, including at least 0.5 course from each of the 3 subject areas.
Note: Students should plan the modules taking into account prerequisites of senior courses.