Science notes Question: What happened in the 5 mass extinctions and how did the extinctions happen? Ordovician-Silurian mass extinction Third largest mass extinction Most life was in the sea 86% of sea life went extinct Trilobites died Brachiopods died Graptolites died An ice age was blamed for this mass extinction They think climate change was the cause for this Fall in sea level Messed up the chemistry of the oceans 443 Mya End of Ordovician period Start of Silurian period Late Devonian mass
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The scientific revolution of the 16th and 17th centuries saw a surge of women into the field of science. However‚ women were not allowed to attend universities and because‚ of this women had to obtain education informally the best way they could. European noblemen were free to pursue an interest in science as a hobby; but on the other hand noblewomen had to take part in the informal scientific networks of only their fathers and brothers. During the 17th century Margaret Cavendish took part in some
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Chapter Thirteen: Hidden Among the Waves The voyage by this time was proceeding with an intensified rhythm and the monotony was beginning to wear on the crew. The crew searched vainly for some variation in routine or some excitement in the waters around them. They searched for anything that would end the weariness and stimulate their interests. It was now more than a week since they lost sight of the Canaries and some thirty more days since leaving the Port of Palos. This day was quite ordinary
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past extinctions. Professor Daniel Whitmire claims the ice planet will turn evil by hurling space rocks towards Earth. It’s 20‚000-year solar orbit will eventually pass through the Kuiper asteroid belt just beyond Pluto. When it does‚ the series of comets and asteroids could become weapons of death deflected towards Earth. Apparently‚ this isn’t the first time the murderous planet
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rings. The most famous ring gap is called the Cassini Division‚ which separate the A and B groups of rings. The origin of the rings is still unknown‚ but scientists believe that the rings were created from debris from shattered moons‚ asteroids‚ or comets (space.com). The rings are made up of ice (frozen water) and rocky particles. Saturn’s rings are 250‚000 kilometers in diameter‚ but‚ they are very thin. The rings
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In Ethan Frome‚ Edith Wharton both directly characterizes Ethan though her description of him and indirectly characterizes Ethan through winter’s effect on him as well as his actions concerning Mattie to depict him as unassertive‚ immobile‚ and frozen. Although Ethan wishes to act romantically with Mattie‚ he ends up making somewhat neutral actions instead of ever acting boldly and is thereby is characterized as immobile like the winter he is trapped by. As soon as the novella begins‚ Wharton describes
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Introduction- The title of this novel is The Scarlet Letter by Nathaniel Hawthrone. The story takes place during the middle of the seventeenth century in Boston‚ Massachusetts. The story is told through an unnamed customhouse surveyor who writes two hundred years after the events he describes took place. He is both omniscient and subjective because he knows more about the characters than they know about themselves while he also voices his own interpretations and opinions. Body- The title relates
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Scientists have been continuously presented with questions regarding the mystery that is life. What is life‚ and how did it get started? Their responses to these questions has varied over the years as advances in technology have led to new evidence being brought in from a ranging variety of fields. In the summer of 1993‚ J. William Schopf‚ a paleobiologist reportedly found fossilized imprints of microbial communities between layers of rock that were 3.5 billion years old. This‚ along with other
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telescope that he designed and built himself (Uranus (2)‚ 2009). He initially reported it as a comet‚ but also compared it to a planet. He notified astronomers who also started observing the planet. After observing it for a while‚ they noticed it did not have any coma or tail to it‚ and eventually noticed it’s nearly circular orbit that led them to the conclusion that it was a planet rather than a comet. Herschel originally named the planet Georgium Sidus‚ or George’s Star in honor of King George
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not sentenced to death for committing adultery. She is forced to wear a scarlet letter A on her bosom to show and remind everyone in her village of the crime she committed. In The Scarlet Letter‚ Nathaniel Hawthorne uses the scarlet letter A‚ the comet‚ and Dimmsdales mark as a reoccurring symbol of sin in the novel. The scarlet letter A on Hester’s bosom is one symbol of sin that appears throughout the novel. The letter grows with Hester over time‚ and becomes a part of her. It gives her the
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