Human Interference (Leaving Cert Geography): Flashcards
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% of world's O₂ from Amazon
% of world's O₂ from Amazon
20%
Carbon sink definition
Carbon sink definition
Environment absorbing more carbon than released
When Amazon human interference began
When Amazon human interference began
1970s
% of Amazon destroyed
% of Amazon destroyed
20%
% of illegal logging in Amazon
% of illegal logging in Amazon
75%
Primary deforestation cause
Primary deforestation cause
Logging
Laterisation
Laterisation
Intense leaching & soil baking into hard laterite
Evapotranspiration
Evapotranspiration
Water evaporated from soil & vegetation into air
% world's plant species in rainforests
% world's plant species in rainforests
50%
% world's medicine from rainforests
% world's medicine from rainforests
25%
% deforested area for cattle pasture
% deforested area for cattle pasture
75%
Most widely grown Brazilian cash crop
Most widely grown Brazilian cash crop
Soya bean
% Brazilian electricity from HEP
% Brazilian electricity from HEP
79%
Indigenous population: 1500s to now
Indigenous population: 1500s to now
11 million to 900,000
% tribal deaths in first contact year
% tribal deaths in first contact year
50%