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A 2017 analysis found that the mountain goat populations of coastal Alaska would go extinct sometime between 2015 and 2085 in half of the considered scenarios of climate change. [102] Another analysis found that the Miombo Woodlands of South Africa are predicted to lose about 80% of their mammal species if the warming reached 4.5 °C (8.1 °F). [1]
Marine Animals: These species' average lifespan is 4–5 million years. Reasons why marine animals go extinct include interactions with fisheries, capturing, pollution, habitat degradation, climate change, and overharvesting. Mammals: These species' average lifespan is 1 million years. Habitat loss is the leading reason for why mammals go extinct.
The Pyrenean ibex, the only animal to have been brought back from extinction and the only one to go extinct twice. Main article: De-extinction Some, such as Harvard geneticist George M. Church , believe that ongoing technological advances will let us "bring back to life" an extinct species by cloning , using DNA from the remains of that species.
Red list categories of the IUCN Demonstrator against biodiversity loss, at Extinction Rebellion (2018).. The current rate of global biodiversity loss is estimated to be 100 to 1000 times higher than the (naturally occurring) background extinction rate, faster than at any other time in human history, [25] [26] and is expected to grow in the upcoming years.
About 17% of all families, 50% of all genera [6] and 75% of all species became extinct. [2] In the seas all the ammonites, plesiosaurs and mosasaurs disappeared and the percentage of sessile animals was reduced to about 33%. All non-avian dinosaurs became extinct during that time. [20]
The shy Australian animals died after only a century of European settlement. Despite the world's last captive thylacine dying in 1936, the secretive animal wasn't declared extinct until 1986.
Endangered species are addressed through Canada's Species at Risk Act. A species is deemed threatened or endangered when it is on the verge of extinction or extirpation. Once a species is deemed threatened or endangered, the Act requires that a recovery plan to be developed that indicates how to stop or reverse the species' population decline. [33]
This illegal trading is worth an estimate of 7-23 billion [30] and an annual trade of around 100 million plants and animals. [31] In 2021 it was found that this trade has caused a 60% decline in species abundance, and 80% for endangered species. [31] This trade can be devastating to both humans and animals.