Unit 4
Energy, Environment, Microbiology and Immunity
What this unit covers
Follow energy through photosynthesis and ecosystems, then examine climate evidence, microorganisms, immunity and forensic applications. The topics connect mechanisms with environmental and health decisions.
- Explain how energy enters and moves through ecosystems.
- Evaluate environmental evidence and models.
- Apply microbiology and immunity to disease and forensics.
Topics in this unit
Unit 4 practical guides
Methods, measurements and evaluation for the five core practicals linked to this unit.
Beyond the classroom
Explore photosynthesis, ecology, climate, microbiology, immunity and forensics through work, research and public claims.
Explore the Unit 4 collection