IGCSE Biology - 4c Cycles within ecosystems
New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019
Section 4c Cycles within ecosystems
- 4.10 describe the stages in the carbon cycle, including respiration, photosynthesis, decomposition and combustion
- 4.11B describe the stages in the nitrogen cycle, including the roles of nitrogen fixing bacteria, decomposers, nitrifying bacteria and denitrifying bacteria (specific names of bacteria are not required)
New and updated resource for IGCSE 9-1- More practical pages, updated design, concept checker and exam style question for each topic.