The Living World
AQA GCSE Geography
Ecosystems exist at a range of scales and involve the interaction between biotic and abiotic components.
Tropical rainforest ecosystems have a range of distinctive characteristics:
Deforestation has economic and environmental impacts:
A case study of a tropical rainforest to illustrate:
Tropical rainforests need to be managed to be sustainable:
Hot desert ecosystems have a range of distinctive characteristics.
Development of hot desert environments creates opportunities and challenges:
A case study of a hot desert to illustrate:
Areas on the fringe of hot deserts are at risk of desertification.
Causes of desertification – climate change, population growth, removal of fuelwood, overgrazing, over-cultivation and soil erosion.
Strategies used to reduce the risk of desertification – water and soil management, tree planting and use of appropriate technology.
Cold environments (polar and tundra) have a range of distinctive characteristics:
Development of cold environments creates opportunities and challenges:
A case study of a cold environment (Alaska) to illustrate:
A case study of a cold environment (Svalbard) to illustrate:
Cold environments are at risk from economic development.
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