Geologists have found that streams in the Karoo basin of South Africa changed suddenly at the end of the Permian period 250 million years ago, from the meandering shape typically found in well-vegetated zones to the braided pattern found in areas without deep-rooted vegetation to hold the soil together.
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Afrom the meandering shape typically found in well-vegetated zones to the braided pattern found in areas without deep-rooted vegetation to hold
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Bfrom the meandering shape typically found in well-vegetated zones to the braided pattern that they find in areas without deep-rooted vegetation for holding
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Cfrom the meandering shape typical in well-vegetated zones to the braided pattern found in areas where it is without deep-rooted vegetation for holding
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Dshifting from the meandering shape typically found in well-vegetated zones to the braided pattern found in areas where it is without deep-rooted vegetation for holding
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Eshifting from the meandering shape that is typical in well-vegetated zones to the braided pattern being found in areas without deep-rooted vegetation to hold
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