4 programs, side by side

Full	Guelph Bachelor of Science in Environmental Sciences (BS [Env]) (co-op option) OUAC GEA ☆ Add to planRemove	Carleton Science – Honours (4 years) OUAC CT ☆ Add to planRemove	U of T (Scarborough) Physical & Environmental Sciences - Health Sciences Stream (regular and co-op) OUAC TXH ☆ Add to planRemove	Western Science OUAC ES ☆ Add to planRemove
Your average, their wayrequired courses forced in
Published rangetheir exact wording	75–80%“75 to 80%”	78%	73–80%“Mid-70s (regular), high 70s (co-op)”	80–87%“Low to mid 80s”
Required coursesforced into your top 6 — options are the row below	ENG4UMHF4USBI4USCH4USPH4U	No course codes parsed — see prerequisites	ENG4UMCV4UMHF4U	ENG4UMCV4U
Choose one ofany of these satisfies it	—	—	—	two of ICS4U, MDM4U, MHF4U, SBI4U, SES4U, SPH4U
Prerequisitesas published	ENG4U MHF4U 2 4U Science courses 2 additional 4U/M courses Acceptable 4U science courses include Biology (SBI4U), Chemistry (SCH4U) and Physics (SPH4U. Completion of Biology and Chemistry is recommended.	Honours in Biochemistry, Bioinformatics, Biology, Biotechnology, Chemistry, Linguistics, Neuroscience and Mental Health, Psycholinguistics and Communications Differences, Psychology, and Gateway (Physical Sciences and Life Sciences): Advanced Functions (MHF4U) Two credits from Biology (SBI4U), Chemistry (SCH4U), Earth and Space Science (SES4U), or Physics (SPH4U) 3 best 4U/M courses +7 more on the program page	ENG4U MCV4U MHF4 Science prerequisites (SPH4U or SBI4U) for specific disciplines are also required. SCH4U is recommended for specific disciplines. See U of T Scarborough's viewbook +1 more on the program page	English, ENG4U Calculus and Vectors MCV4U Two of: Advanced Functions, MHF4U Biology, SBI4U +7 more on the program page
More than marks?supplementary application	Marks only	Marks only	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
Co-op	Available	Available	Available	Available
Degree	—	—	—	—
First-year intakewhere published	—	—	340	550
What you study	Biological SciencesChemistryEconomicsEnvironmental Studies	Audiology and Speech Language PathologyBiotechnologyChemistryEnvironmental Studies	AstronomyChemistryEnvironmental StudiesGeology	Animal ScienceAstronomyBiological SciencesChemistry
What it is	Environmental sciences combines biology, chemistry, economics, and Earth systems to understand how environments work and how human activity affects them. The co-op option lets you alternate between study terms and paid work placements with environmental organizations, government agencies, or companies, giving you real experience alongside your degree. This program suits people who want practical skills in environmental problem-solving and prefer learning through both classroom study and workplace application.	This is a four-year science degree where you specialize in one of many fields — from chemistry and physics to biology, geology, audiology, linguistics, or environmental science. The honours designation means you go deeper into your chosen subject than a general science degree would. The program includes optional co-op work terms, letting you gain paid professional experience alongside your studies, which suits students who want both classroom learning and real workplace practice in their field.	You study physical sciences — chemistry, physics, geology, and environmental topics — with a focus on how they connect to human health and the living world. This stream emphasizes the intersection between earth and life sciences rather than pure physics or chemistry alone. The co-op option lets you do paid work terms at relevant employers alongside your degree. It suits students interested in environmental health, toxicology, or science careers that bridge the natural world and wellness.	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.
The door tomajors you reach through it	earth scienceenvironmental science	biochemistrybiologychemistryearth scienceenvironmental sciencelife sciencesneurosciencephysics	health sciences	biologychemistryearth scienceenvironmental sciencelife sciencesmathematicsphysicsstatistics
Entrance awardsat this campus, by average	12 published, 4 with no applicationfrom 75%See them	16 published, 9 with no applicationfrom 75%See them	4 published, 4 with no applicationfrom 85%See them	6 published, 5 with no applicationfrom 85%See them
Source	University of Guelph on OUInfo	Carleton University on OUInfo	University of Toronto — Scarborough on OUInfo	Western University 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.