AQA A-level biology 3.5.3 Energy and ecosystems & 3.5.4 Nutrient cycles

PowerPoints including everything you need to deliver the following topics, broken up into sections according to the specification including questions and answers tailored to the AQA A-level specification:

Key-words:

3.5.3 Energy and Ecosystems
Ecosystem
Biomass
Trophic level
Producer
Consumer
Primary consumer
Secondary consumer
Tertiary consumer
Decomposer
Food chain
Food web
Pyramid of biomass
Pyramid of energy
Gross primary productivity (GPP)
Net primary productivity (NPP)
Respiration
Energy transfer
Energy loss
Efficiency
Calorimetry
Dry mass
Productivity
Photosynthesis
Respiratory loss ®

3.5.4 Nutrient Cycles
Nutrient
Nutrient cycle
Nitrogen cycle
Ammonification
Nitrification
Nitrogen fixation
Denitrification
Decomposition
Saprobionts
Mycorrhizae
Phosphorus cycle
Phosphate ions
Assimilation
Leaching
Eutrophication
Natural fertilisers
Artificial fertilisers
Organic matter
Run-off
Algal bloom
Oxygen depletion
Soil fertility