Led by Alexander von Humboldt Simulacrum
The first theme of the World Around Us component of OCR GCSE Geography A — the planet's ecosystems, from the global distribution of biomes to the tropical rainforest and coral reef in depth, hosted by the founder of biogeography.
Led by Alexander von Humboldt Simulacrum
The question
What is an ecosystem, and why is each found where it is? You will study ecosystems as interdependent webs of abiotic (weather, climate, soil) and biotic (plants, animals, humans) components, then the global distribution and broad character of the major biomes — polar regions, coral reefs, grasslands, temperate forests, tropical rainforests, and hot deserts.
Outcome
You can explain what an ecosystem is, describe the distribution of the world's major biomes, and say why each is found where it is.
Sub-units
Led by Alexander von Humboldt Simulacrum
The question
How does the rainforest work, and why is it so fragile? You will locate the world's major rainforests and study the rainforest as a system — its climate and soils, its layered life and adaptations, its rapid nutrient cycle, its value to humans, and the issues in using and managing it sustainably.
Outcome
You can analyse the tropical rainforest as an interdependent ecosystem and account for both its richness and its fragility.
Sub-units
Led by Alexander von Humboldt Simulacrum
The question
How does a coral reef live, and why is it so vulnerable? You will locate the world's major warm-water reefs and study the reef as a system — the narrow abiotic conditions it requires, its biotic life, its value to humans, and the issues in its sustainable use and management.
Outcome
You can analyse the coral reef as an interdependent ecosystem and account for its productivity and its vulnerability alike.
Sub-units