4 programs, side by side

Full	Western Science OUAC ES ☆ Add to planRemove	Algoma Environmental Science (BSc 4 Year) OUAC JES ☆ Add to planRemove	U of T (Scarborough) Life Sciences - Health Sciences Stream (regular and co-op) OUAC TXD ☆ Add to planRemove	Guelph Bachelor of Science (BSc) General OUAC GZG ☆ Add to planRemove
Your average, their wayrequired courses forced in
Published rangetheir exact wording	80–87%“Low to mid 80s”	65%	73–80%“Mid-70s (regular), high 70s (co-op)”	80–85%“80 to 85%”
Required coursesforced into your top 6 — options are the row below	ENG4UMCV4U	ENG4UMHF4U	ENG4USBI4U	ENG4U
Choose one ofany of these satisfies it	two of ICS4U, MDM4U, MHF4U, SBI4U, SES4U, SPH4U	—	one of MCV4U, MDM4U, MHF4U	—
Prerequisitesas published	English, ENG4U Calculus and Vectors MCV4U Two of: Advanced Functions, MHF4U Biology, SBI4U +7 more on the program page	ENG4U MHF4U Two 4U/M science courses (Chemistry and Biology are recommended) Two other 4U/M courses 65% combined average in top six 4U/M courses +1 more on the program page	ENG4U MCV4U, MHF4U or MDM4U SBI4U SCH4U recommended MCV4U for specific disciplines is required. +2 more on the program page	Biological Sciences: ENG4U MHF4U 2 4U Science courses 2 additional 4U/M courses +5 more on the program page
More than marks?supplementary application	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	Marks only	Marks only
Co-op	Available	No	Available	No
Degree	—	—	—	—
First-year intakewhere published	550	—	680	—
What you study	Animal ScienceAstronomyBiological SciencesChemistry	Environmental StudiesOthers in Physical Sciences	Animal ScienceBiological SciencesBiotechnologyGenetics	Animal ScienceBiological SciencesBiotechnologyChemistry
What it is	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.	This is a four-year science degree focused on understanding natural systems and how human activity affects them. You study biology, chemistry, ecology, and earth science together rather than picking one specialty. It suits students who want a broad grounding in environmental problem-solving and are comfortable with lab work and field studies.	You study the science of living systems — cells, organisms, genetics, and disease — with flexible depth depending on which specialization you choose. The co-op option lets you alternate between classroom semesters and paid work terms at research labs, hospitals, or biotech companies, building real experience alongside your degree. This stream suits students drawn to biology and chemistry who want either a traditional path or the chance to test careers in health and life sciences before graduating.	A Bachelor of Science (General) lets you study science broadly across biology, chemistry, environmental science, and related fields, choosing your own mix of courses rather than specializing deeply in one area. Unlike an honours program, it gives you flexibility to explore multiple sciences without committing to a single major or meeting the tighter requirements of a specialized stream. This suits students who are curious about science in general but aren't yet sure which direction appeals to them most.
The door tomajors you reach through it	biologychemistryearth scienceenvironmental sciencelife sciencesmathematicsphysicsstatistics	environmental science	Applied to directly	Applied to directly
Entrance awardsat this campus, by average	6 published, 5 with no applicationfrom 85%See them	7 published, 7 with no applicationfrom 80%See them	4 published, 4 with no applicationfrom 85%See them	12 published, 4 with no applicationfrom 75%See them
Source	Western University on OUInfo	Algoma University on OUInfo	University of Toronto — Scarborough on OUInfo	University of Guelph on OUInfo

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.