3 programs, side by side

+ Add a program	Carleton Science – Major (4 years) OUAC CK ☆ 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	74–76%	80–87%“Low to mid 80s”	80–87%“Low to Mid-80s”
Required coursesforced into your top 6 — options are the row below	MHF4USBI4USPH4U	ENG4UMCV4U	ENG4UMCV4U
Choose one ofany of these satisfies it	two of MCV4U, SCH4U, SES4U	two of ICS4U, MDM4U, MHF4U, SBI4U, SES4U, SPH4U	two of SBI4U, SCH4U, SPH4U
Prerequisitesas published	Biochemistry, Biology, Earth Sciences, Environmental Science, Neuroscience and Mental Health, and Physics. MHF4U 2 of MCV4U, SBI4U, SCH4U, SES4U or SPH4U 3 best 4U/M courses For all programs in Physics, SPH4U is strongly recommended. +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 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	No	Available	Available
Degree	—	—	—
First-year intakewhere published	—	550	—
What you study	Environmental StudiesGeologyMolecular Biology, BiochemistryOthers in Physical Sciences	Animal ScienceAstronomyBiological SciencesChemistry	Biological SciencesBiologyBiotechnologyChemistry
What it is	A Science Major is a four-year degree where you study one science subject deeply — such as physics, biology, geology, or environmental science — along with complementary courses in math and other sciences. It differs from a specialized honours program in that you focus on breadth within your chosen field rather than pursuing a single narrow specialization. This program suits students who want solid grounding in a science discipline without committing to professional training like engineering or medicine.	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	Applied to directly	biologychemistryearth scienceenvironmental sciencelife sciencesmathematicsphysicsstatistics	earth scienceenvironmental science
Entrance awardsat this campus, by average	16 published, 9 with no applicationfrom 75%See them	6 published, 5 with no applicationfrom 85%See them	None published by average
Source	Carleton University 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.