3 programs, side by side

+ Add a program	Guelph Bachelor of Science in Environmental Sciences (BS [Env]) (co-op option) OUAC GEA ☆ Add to planRemove	Western Science OUAC ES ☆ Add to planRemove	Queen's Earth and Environmental Science Pathway OUAC QSE ☆ Add to planRemove
Your average, their wayrequired courses forced in
Published rangetheir exact wording	75–80%“75 to 80%”	80–87%“Low to mid 80s”	80–87%“Low to Mid-80s”
Required coursesforced into your top 6 — options are the row below	ENG4UMHF4USBI4USCH4USPH4U	ENG4UMCV4U	ENG4UMCV4U
Choose one ofany of these satisfies it	—	two of ICS4U, MDM4U, MHF4U, SBI4U, SES4U, SPH4U	two of SBI4U, SCH4U, 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.	English, ENG4U Calculus and Vectors MCV4U Two of: Advanced Functions, MHF4U Biology, SBI4U +7 more on the program page	ENG4U MCV4U 2 of SBI4U, SCH4U, or SPH4U 2 Additional 4 U/M courses
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	Available
Degree	—	—	—
First-year intakewhere published	—	550	—
What you study	Biological SciencesChemistryEconomicsEnvironmental Studies	Animal ScienceAstronomyBiological SciencesChemistry	Biological SciencesBiologyBiotechnologyChemistry
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 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.	You study the natural systems that support life on Earth — combining biology, chemistry, geology, and geography to understand ecosystems, environmental problems, and how living things interact with their physical surroundings. This pathway is structured to integrate multiple science disciplines rather than focus narrowly on one, and it includes mandatory co-operative work terms where you apply classroom learning to real environmental jobs. It suits students curious about how nature works across scales, from molecules to landscapes, who want hands-on experience before deciding on a specific environmental career.
The door tomajors you reach through it	earth scienceenvironmental science	biologychemistryearth scienceenvironmental sciencelife sciencesmathematicsphysicsstatistics	earth scienceenvironmental science
Entrance awardsat this campus, by average	12 published, 4 with no applicationfrom 75%See them	6 published, 5 with no applicationfrom 85%See them	None published by average
Source	University of Guelph on OUInfo	Western University on OUInfo	Queen's 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.