Questions tagged [extinction]

Extinction refers to the global disappearance of a taxon, caused by the death of the last individual member. Extinction can be used on many different levels and may relate to populations, groups of populations, species or higher taxa (such as families).

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Is there evidence for higher human genetic diversity prior to the alleged Toba Catastrophe genetic bottleneck?

I've been reading on the Toba Catastrophe theory and that it supposedly caused a genetic bottleneck in humans some 70k years ago, which raised a question that I couldn't find an answer to by searching ...
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How are baselines for extinction rates established?

At the time of 2010, the UN Environment Programme estimated that 150-200 species of plant, insect, bird and mammal become extinct every 24 hours, and, that this is nearly 1000 times greater than "...
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What made *silphium* difficult to domesticate?

I tried this question at Worldbuilding SE, and was told that perhaps this place would give me a better chance at an answer. So, leaving aside the worldbuilding aspects of the issue, I am interested in ...
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Ice Age Extinctions - Man vs Nature?

As the most recent "ice age" (the Pleistocene) came to a close, changing climatic conditions obviously changed the playing field, driving some species to extinction. But humans were spreading around ...
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Do Parasaurolophus have hands with fingers to grab?

http://en.wikipedia.org/wiki/Parasaurolophus#mediaviewer/File:Parasaurolophus_cyrtocristatus.jpg I cannot tell if the hands have fingers strung together to form a hove, or fingers to grab. I have ...
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Why did ALL dinosaurs go extinct?

Why did all dinosaurs, rather than just some of them, go extinct during the K-T extinction event? Birds are an exception, but being able to fly, they are also a very special kind of creature, and ...
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Can the Quarternary Extinction event be linked to the spread of mankind around the world?

Evidence is presented in a variety of media by Paul S. Martin as his 'Overkill hypothesis', particularly in Twilight of the Mammoths. The internet describes this idea as 'controversial.' Other than ...