3 programs, side by side

Rows marked with a dot are where these differ. Everything is each university’s own published wording; the “your average” row is yours, calculated the way each program does it.

	Ottawa Géosciences environnementales (4 ans) OUAC OWP Remove	Western Science OUAC ES Remove	Guelph Bachelor of Arts and Sciences (BAS) OUAC GAS Remove
Your average, their wayrequired courses forced in
Published rangetheir exact wording	75–80%“75%; co-op 80%”	80–87%“Low to mid 80s”	78–83%“78 to 83%”
Required coursesforced into your top 6 — options are the row below	MCV4U MHF4U	ENG4U MCV4U	ENG4U MHF4U
Choose one ofany of these satisfies it	one of ENG4U, FRA4U two of SBI4U, SCH4U, SES4U, SPH4U	two of ICS4U, MDM4U, MHF4U, SBI4U, SES4U, SPH4U	two of SBI4U, SCH4U, SPH4U
Prerequisitesas published	FRA4U or ENG4U MHF4U MCV4U 2 of SPH4U, SCH4U, SBI4U, SES4U A combined minimum average of 70% is required for all prerequisites in science and mathematics. +3 more on the program page	English, ENG4U Calculus and Vectors MCV4U Two of: Advanced Functions, MHF4U Biology, SBI4U +7 more on the program page	ENG4U MHF4U One 4U/M Arts or Social Sciences Two from SBI4U, SCH4U, SPH4U One additional 4U/M course +3 more on the program page
More than marks?supplementary application	Marks only	Yes Unless otherwise noted, required courses must be completed with a minimum average of 70%. Western Integrated Science applicants must submit a supplementary application. More information Usually closes before January 15	Marks only
Co-op	Available	Available	No
Degree	Bachelor of Science, BSc, Bachelor of Science (Co-op), BSc (Co-op)	—	—
First-year intakewhere published	—	550	—
What you study	Environmental Studies Geology Physical Geography	Animal Science Astronomy Biological Sciences Chemistry	Animal Science Anthropology Biological Sciences Chemistry
What it is	You study how Earth's physical systems — rocks, soil, water, and climate — interact with living things and human activity. This program combines geology, geography, and environmental science rather than focusing on just one. The co-op option lets you do paid work terms with employers in the environmental or resource sector alongside your coursework, giving you real experience before you graduate. This suits people interested in understanding environmental problems and possibly working in conservation, resource management, or environmental consulting.	This is a broad science degree where you choose from fields like biology, chemistry, physics, computer science, geology, and others. You take foundational science courses in first year, then specialize by selecting which science subjects to focus on. Co-op is available, letting you do paid work terms at science-related employers alongside your studies.	A Bachelor of Arts and Sciences lets you combine study in both humanities and natural sciences within one degree. Unlike most programs that require you to choose either arts or sciences, this one lets you take courses across both — for instance, pairing creative writing with chemistry, or anthropology with animal science. It suits people who are curious across multiple disciplines and want flexibility rather than specializing narrowly from the start.
The door tomajors you reach through it	Applied to directly	biology chemistry earth science environmental science life sciences mathematics physics statistics	Applied to directly
Entrance awardsat this campus, by average	22 published, 5 with no applicationfrom 75%See them	6 published, 5 with no applicationfrom 85%See them	12 published, 4 with no applicationfrom 75%See them
Source	University of Ottawa on OUInfo	Western University on OUInfo	University of Guelph on OUInfo

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Same subject area and a similar published range, at a campus you have not got in the table yet.

Ranges are what each university publishes, not guaranteed cutoffs, and limited-enrolment programs often admit above them. Confirm anything you are about to act on with the university; each column links to its source.