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To s and the flow of matter and energy between organisms
The organisms in the Cretaceous period and Permian Period are now extinct.
The emergence and demise of specific living forms are represented by time periods on the geologic time scale that span hundreds of millions of years. A mass extinction is a period of geologic time when a large number of plant and animal species go extinct, sometimes within a few thousand to a few million years.
Life has recovered after each of the five significant mass extinctions that have taken place during the past 500 million years. Because it led to the extinction of the dinosaurs, the mass extinction at the end of the Cretaceous Period is the most well-known. However, the Permian Period's end saw the most extreme one in terms of the number of species destroyed.
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Profit-making enterprises comprise 75% of all employment in the united states.
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l am like cool but my parents are so negative impact so it is worng
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Because when they were passing goods from India to Egypt the prices were raised. Ghengis khan and his mongol armies rose to power at the end of the twelfth century, at the moment wgen few opposinf rulers could put up much resistance to them. The vast mongol empire he created stretched from China to Europe, across which the silks routes functioned as efficient lines of communication as well as trade.
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