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GCSE Exam GCSE Environmental Science
3.6.1.1 Negative feedback mechanisms which resist change
3.6.1.2 Positive feedback mechanisms which increase change
3.6.1.3 Equilibrium tipping points which lead to new equilibria
3.6.1.4 Diverse systems are more likely to be resistant to change
3.6.2.1 Natural processes are driven by renewable energy, especially solar power
3.6.2.2 Natural processes use low energy-density resources
3.6.2.3 Most natural processes occur at low temperatures
3.6.2.4 Carbon footprints and sustainable development
3.6.3.1 Linear human systems lead to resource depletion and waste generation
3.6.3.2 Natural processes often link together in sequences that create cycles, with the waste products of one process being the raw materials for other processes
3.6.3.3 Natural waste products are either non-toxic or do not build up to cause toxicity
3.6.3.4 The circular economy
3.6.4.1 The application of the principles of the circular economy to the development of sustainable lifestyles
3.6.4.2 Biocapacity and ecological footprints: a comparison of the factors controlling the impact of different ecological footprints on biocapacity
3.6.5 Opportunities for skills development and independent thinking