A - Unity and Diversity
B - Form and Function
C - Interaction and Interdependence
D - Continuity and Change
View a summary cheatsheet for Option C - Ecology and conservation
C.1 Species and communities
C.2 Communities and ecosystems
C.3 Impacts of humans on ecosystems
C.4 Conservation of biodiversity
C.5 Population ecology
C.6 Nitrogen and phosphorus cycles
