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Hello there students.
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Today we're going to be answering this question in regards to the chapter on biogeography.
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So the question here reads in macarthur and wilson's model equilibrium species richness is reached when what? when immigration rates of new species and extension rate the species is equal or when immigration rates of species equal or when immigration rates of all.
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Species and extinction rates of species are equal or is it when the rate of piccarian events equal to the rate of dispersal or is it when the rate of island formation equals the rate of island loss or is it no equilibrium number of species exist in that model you can pause the video and choose which one is the correct answer and we'll go over this shortly okay, so we look at the model for macarthur and wilson's model of species richness on island.
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They brought up showing, like, you might see a graph where there's a red line that's going, you see a red line on one end, which represents the rate of arrival of new species, and you see a blue line coming down which shows, oh, sorry if i move the light, the extinction rate.
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And in the middle, there's a dot where they got the s or the s represents the equilibrium.
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And they brought up saying the number of species reaches in equilibrium when the number of new species arriving equal to the number becoming extinct...