4 programs, side by side

Full	Western Science OUAC ES ☆ Add to planRemove	Algoma Environmental Science (BSc 4 Year) OUAC JES ☆ Add to planRemove	Carleton Science – Honours (4 years) OUAC CT ☆ Add to planRemove	Guelph Bachelor of Science (BSc) Honours OUAC GZ ☆ Add to planRemove
Your average, their wayrequired courses forced in
Published rangetheir exact wording	80–87%“Low to mid 80s”	65%	78%	80–91%“80-85% for all majors except Neuroscience (81-86%), and Animal Biology, Bio-Medical Science (85-91%)”
Required coursesforced into your top 6	ENG4UICS4UMCV4UMDM4UMHF4USBI4USCH4USES4USPH4U	ENG4UMHF4USBI4USCH4U	MCV4UMHF4USBI4USCH4USES4USPH4U	ENG4UMCV4UMHF4USBI4USCH4USPH4U
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	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	Biological Sciences: ENG4U MHF4U 2 4U Science courses 2 additional 4U/M courses +7 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	Available
Degree	—	—	—	—
First-year intakewhere published	550	—	—	—
What you study	Animal ScienceAstronomyBiological SciencesChemistry	Environmental StudiesOthers in Physical Sciences	Audiology and Speech Language PathologyBiotechnologyChemistryEnvironmental Studies	Animal ScienceBiological SciencesChemistryEnvironmental Studies
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.	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.	A Bachelor of Science Honours is a four-year degree where you specialize in one science discipline — such as biology, chemistry, environmental studies, or nutrition — and take supporting courses in math and other sciences. The honours designation means you complete a research project or thesis in your final year. Many students choose the optional co-op stream, which alternates study terms with paid work placements in related fields, giving you practical experience alongside classroom learning. This program suits students who want depth in a single science and are interested in research, lab work, or professional roles in health, environment, or industry.
The door tomajors you reach through it	biologychemistryearth scienceenvironmental sciencelife sciencesmathematicsphysicsstatistics	environmental science	biochemistrybiologychemistryearth scienceenvironmental sciencelife sciencesneurosciencephysics	biochemistrybiologychemistryhealth scienceslife sciencesmicrobiologyneurosciencephysics
Entrance awardsat this campus, by average	6 published, 5 with no applicationfrom 85%See them	7 published, 7 with no applicationfrom 80%See them	16 published, 9 with no applicationfrom 75%See them	12 published, 4 with no applicationfrom 75%See them
Source	Western University on OUInfo	Algoma University on OUInfo	Carleton University 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.