Topic Summary
Topic 2.3, “Biogeochemical Cycles” focuses on the carbon cycle and the nitrogen cycle. The nitrogen cycle is HL-only content.
Theory of Knowledge
- Does the systems approach to looking at complex systems, such as the carbon cycle, improve or understanding, or does it oversimplify and weaken knowledge?
- Considering industrial processes such as the Haber process providing liquid fertilisers, does modern technology weaken our understanding of ecosystem services, such as natural nitrogen fixation?