Studied by 2 people
Human Activities Causing Species Extinctions
habitat destruction, introduction of invasive species, pollution, overharvesting, hunting and climate change
Factors for Red List
population size, degree of specialisation, distribution, reproductive potential and behaviour, geographic range and degree of fragmentation, quality of habitat, trophic level, probability of extinction
extinct
no longer survives on Earth
extinct in the wild
only survives in zoos or botanic gardens
Threatened
umbrella term for Critically Endangered, Endangered and Vulnerable species
Causes of Tropical Deforestation
Over-intensive shifting cultivation; Timber extraction; Over-collection of fuelwood for cooking and heating, and for making charcoal; Encroachment and clearance by landless peasant farmers; Clearance for pasture or crops, promoted by cheap land and government tax and financial incentives to encourage international investment - this includes Biofuels like Palm Oil and Sugar Cane
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