24.1 Organisation of Life
- Concept, hierarchy and interaction
24.1.1 Components of life: organisms, populations and communities, ecosystems, biomes and biospheres
- Definition and examples
- Emphasis on dynamism of ecosystems
24.1.2 Niche and habitat
24.2 Biogeochemical cycles
- Sulphur and phosphorus cycles
24.3 Energy
- First and second law of thermodynamics
24.3.1 Flow
- Definition, one example of ecosystem: pond/forest
24.3.2 Transfer
- Efficiency of energy transfer by producers, consumers and composers
- One example of ecosystem: pond/forest
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