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Extinction is the complete disappearance of a species from Earth. Species go extinct every year, but historically the average rate of extinction has been very slow with a few exceptions. The fossil record reveals five uniquely large mass extinction events during which significant events such as asteroid strikes and volcanic eruptions caused widespread extinctions over relatively short periods ...
Mar 25, 2021 · The African savanna elephant ( loxodonta africana) is now listed as Endangered on the IUCN Red List. The IUCN Red List now includes 134,425 species of which 37,480 are threatened with extinction. “Africa’s elephants play key roles in ecosystems, economies and in our collective imagination all over the world.
Extinction (formerly known as Welcome to Harmony) is a 2015 post-apocalyptic horror film directed by Miguel Ángel Vivas who also co-wrote the screenplay with Alberto Marini from the novel Y pese a todo by Juan de Dios Garduño. The film stars Matthew Fox, Jeffrey Donovan and Quinn McColgan. In a post-apocalypse future, three survivors confront issues from their past, as well as a race of ...
This cohort accumulated 98,334 species-years—meaning that an average species has been known for 80 years. The extinction rate is (13/98,334) × 10 6 = 132 E/MSY. The more difficult question asks how we can compare such estimates to those in the absence of human actions—i.e., the background rate of extinction.
A mass extinction is a short period of geological time in which a high percentage of biodiversity, or distinct species—bacteria, fungi, plants, mammals, birds, reptiles, amphibians, fish, invertebrates—dies out. In this definition, it’s important to note that, in geological time, a ‘short’ period can span thousands or even millions of years.
May 6, 2019 · Update 06 May 2019. Humans are driving one million species to extinction. Landmark United Nations-backed report finds that agriculture is one of the biggest threats to Earth’s ecosystems. Jeff ...
Feb 21, 2022 · Ocean plastic pollution is set to grow fourfold by 2050, says a new report. And there may be 50 times more microplastics in the sea by 2100. Plastic pollution is pushing some species to the brink of extinction. But technological innovation and combined global action can help avert disaster. The level of microplastics in our oceans is set to ...
