Biodiversity: The variety of life on Earth
Biome: A natural climatic and vegetation region
Centres of endemism: Areas with particularly high numbers of species found there and nowhere else on Earth
Endemic: An indigenous species with a very restricted natural distribution
Fossil fuels: Fuels like coal, oil and natural gas formed from ancient woody material laid down and buried by natural causes
General Circulation Model: A computer program used to simulate and predict climate
Global climate change: Changes in climate that affect the entire world
Greenhouse effect: The warming of the Earth's atmosphere caused by the presence of 'greenhouse gases'
Greenhouse gases: Gases like carbon dioxide, methane and nitrogen oxides that absorb and trap the energy of sunlight within the Earth's atmosphere, causing it to warm up
Hotspot: A region with exceptionally large numbers of species, but also threatened by human activities
Indigenous: Occurring naturally in an area
Interglacial period: Warmer periods between ice ages
Speciation: The evolution of new species
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