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Hey everybody.
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Today we're talking about mass extinction.
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Super fun.
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This question does require us to know when our periods are.
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So be sure to know this option.
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And it's asking us when the greatest mass extinction occurred.
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Not just that we know which is a mass extinction.
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Because all of these are usually ended by an extinction.
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So...
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Greatest mass extinction.
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So our answers, we have five, i believe.
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Yes, we have five.
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And it's just asking us to understand which one is correct.
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So you need to know a few facts, including your order.
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And it's saying at what boundary.
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So that means that these have to be matching up.
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And if they're matching up, we can pretty much knock out some.
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So the, hmm, a good way to think of it is what once have you heard of? because that's a really good way to tell.
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And jurassic period is where there was a lot of dinosaurs, right? like jurassic park.
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So you can guess that there's not going to be a major extinction before that.
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Yeah.
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So our first one is pylosine, pliosteen.
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There's not even a mass extinction at this time point, so that's going to be wrong.
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Next up we have permian triassic.
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This is going to be our answer...