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assignment 2 - These include the shifting of continents...

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Daniel Bang A38965360 ISP 221 Chapters 4, 5, 6 Flanery starts by discussing the new twentieth century. The chapter goes on to explain Fourier’s observation that the sun is powerful and the more powerful the source, the shorter the wavelengths of energy is generated. Another thing that was mentioned was Milankovich’s three principles of cycles that drive Earth’s climactic variability. They were: the longest of the cycles concerns the planet’s orbit around the Sun, the second cycle takes 42,000 years to run its course, and it concerns the tilt of Earth on its axis, and finally the third and shortest cycle, which runs its course every 22,000 years, concerns the wobble of Earth on its axis. Milanovich’s work is considered an invaluable contribution to science and is considered one of the greatest breakthroughs ever made in climate studies. Chapter 5 breaks down the periods of geological time scale, and there is a chart on page 47, which displays this. There are three agents of change, which is discussed.
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Unformatted text preview: These include: the shifting of continents, cosmic collisions and climate-driving forces such as greenhouse gases. Time’s greatest division is partitioned into eras, which accounts for almost 95% of species extinction. It also explains oceanic circulation: two isotopes if carbon were traced. The Ocean Drilling Program discovered three cores, one of which was the layer that sat atop a section of sea floor that had been eaten away by acid. These slow changes to extinction increased greenhouse gases. Chapter 6 introduces to the concept of deep-freeze while bringing up the word, Pleistocene which means “the most recent times”. The chapter says that the genetic inheritance laid down in this world of ice is still with us today. We can observe this by looking at a piece of timber. By doing this we can tell that the compressed rings tell of adversity when extreme weather conditions tested life to the limits....
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