0.5 course from: Environmental Science 1021F/G, Geography 1300A/B, 1400F/G, 1500F/G, the former Geography 020E, Earth Sciences 1022A/B, 1023A/B, 1081A/B, 2281A/B, the former Earth Sciences 020, 085b;
Biology 1222 or 1223;
Chemistry 1050 or the former Chemistry 1020 or 020 or 023;
1.0 course from: Calculus 1000A/B, 1100A/B, 1201A/B, 1301A/B, 1501A/B, Mathematics 1225A/B, 1228A/B, 1229A/B, Linear Algebra 1600A/B, Statistical Sciences 1024A/B or the former Mathematics 030.

Module
9.0 courses:

0.5 course: Chemistry 2210A/B, or the former Chemistry 226a/b.
0.5 course from: Biology 2244A/B, Statistical Sciences 2035, 2037A/B, 2122A/B, 2141A/B, Psychology 2810 (Module will be 9.5 courses if Statistical Sciences 2035 or Psychology 2810 is taken).
0.5 course from: Biology 2217B, 2404A, 2483A, 2484A, 2485B.
0.5 course from: Earth Sciences 2200A/B, 2220A/B, 2221A/B, 2230A/B, 2240F/G, 2261A/B, 2265A/B.
0.5 course from: Geography 2010A/B, 2011A/B, 2012A/B, 2020A/B, 2030A/B, 2040A/B, 2045A/B, 2070E, 2131A/B, 2151A/B, 2152A/B, 2153A/B, 2154F/G, 2155F/G (Module will be 9.5 courses if Geography 2070E is taken).
1.5 courses: Environmental Science 3300F/G, 3350F/G, 4970F/G.
0.5 course from: Environmental Science 4949F/G, Biology 4230A/B, 4243G, 4932F/G.
2.5 additional courses from the "Environmental Science Course List" below, including at least 0.5 course from each of the 3 subject areas.
2.0 additional courses at the 3000 level or above from the "Environmental Science Course List" below.

Note: Students should plan the modules taking into account prerequisites of senior courses.