AQA GCSE Combined Science Trilogy · 8464
Specification 4.7.2.1, 5.7.1.1 · Paper 2, Paper 4
Revise: Food Chains and Predator–Prey CyclesBiomass is the biological material that makes up living organisms. Photosynthetic organisms produce the biomass that supports food chains and life on Earth. They are called producers because they synthesise — make — biological molecules rather than obtaining them by eating other organisms.
- Revise: Crude Oil and Alkanes
Material from living or once-living organisms.