New Edexcel IGCSE 9-1 4BI1 syllabus for 2017 first examined in 2019
This is a PowerPoint presentation for the topic - 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)
The file is fully editable, has plenty of original diagrams and animations along with true false concept check questions at the end of the presentation and an exam style question.
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