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Gas And Dust Carbon Dioxide
1,584 wordsAsteroids sling through space, celestial debris of diverse origins, leftovers from the formation of the solar system, broken offshoots of parental asteroids or comets that have lost their glow. But if an asteroid were to smash into Earth, the result would mean a global catastrophe and life on our Planet could come to an end. The explosion would approach that of a million megatons of TNT- sixteen hundred times greater than the most powerful nuclear weapon ever tested (Barnes-Svarney 234). Asteroi...
Free research essays on topics related to: ice caps, gas and dust, greenhouse effect, earths surface, carbon dioxide -
Million Years Ago 65 Million Years
1,623 wordsThe first question that must be posed when trying to crack the mystery of the mass extinction is to ask, throughout history were there any other occurences of this magnitude? The answer is a resounding yes. Altogether over time there has been about eight mass extinctions to large land dwelling vertebrates. The most recent was about ten thousand years ago, killing most of the giant mammals like mammoths, mastodons, super-large camels, saber-toothed tigers, and others (Bakker 428). The second ques...
Free research essays on topics related to: 65 million years, million years ago, 100 000 years, quot quot, mass extinctions -
Kilometers In Diameter Mitral Valve
1,169 wordsReading Response Researchers have now concluded that a heart defect, called mitral valve prolapse is not as dangerous as it was previously pronounced. The defect is far less common and dangerous, only effecting about 5 percent of Americans. The syndrome, which is caused by the mitral valve flaps becoming elongated and floppy, letting blood flow backwards into the heart chamber. The defect may require surgery to prevent sudden death, stroke, heart failure, and abnormal heart rhythms that cause fa...
Free research essays on topics related to: three categories, million miles, mitral valve, kilometers in diameter, heart failure
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