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Mass extinctions - Coggle Diagram
Mass extinctions
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Climate change, glaciers, sea level shifts, and potentially an extreme ice age are among hypothesized explanations. Volcanic activity and the emission of greenhouse gases are two potential causes.
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Hypothesized causes: Climate change, anoxic (oxygen-depleted) ocean conditions, and potentially a succession of extinction events caused by asteroid strikes or volcanic activity.
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Hypothesized causes: Severe volcanic activity (creating the Siberian Traps), resulting in climatic change, global warming, oceanic anoxia, acidification, and a cascade of biological catastrophes. It is regarded as the most devastating mass extinction in Earth's history.
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Possible reasons include volcanic activity, climate change, and asteroid strikes. This extinction event laid the groundwork for dinosaur domination during the Jurassic period.
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The impact of a massive asteroid or comet on the Yucatán Peninsula, which produced widespread wildfires, darkness, and a long-lasting impact winter, is one of the hypothesized reasons. This catastrophe resulted in the extinction of non-avian dinosaurs and many other species.
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Date: Started around 10,000 years ago and continues today
Percent of biodiversity lost: Difficult to estimate accurately, but it is considered the most rapid extinction event in history.
Hypothesized causes: Human activities, including habitat destruction, overhunting, pollution, climate change, and the introduction of invasive species.