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Rail is a reliable shipping method on land and it's environmentally-friendly. You can ship machinery or even perishable goods by rail because it's fast and efficient. There are schedules and reliable delivery times, so you'll know when your goods are expected to arrive at their destination.
A unique property of stem cells is that they can divide and differentiate, meaning they can become specialized cells. Stem cells can specialize to gain a specific function, for example a stem cell can become a liver cell.
The First Continental Congress wrote a petition to King George declaring Parliament couldn't pass laws on the colonists without representation by colonists.
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Farmers needed to dispose of farm-animal waste to keep water supplies clean. Fertilizer made the soil capable of growing plants brought from other continents. Adding fertilizer to the soil prevented farmers from having to use slash-and-burn techniques.
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Hercules was gifted with amazing strength and it caused problems that he had to deal with. He had to overcome the obstacles and the chance that he may hurt someone and be punished because he couldn't control his strength. Allusions to Hercules: In Shakespeare's Hamlet, Prince Hamelt compares himself to Hercules.
Albert Einstein (1879-1955), a German-born American mathematician, serves as a literary allusion to intelligence. Einstein formulated the theory of relativity, and was awarded the Nobel Prize for physics in 1921. He is often considered the greatest scientist of the 20th century. Many movie producers over the years have taken advantage of the literary allusion that comes out of the name Einstein. For example, in the movie The Observer (1998), they say, “It’s a neat theory, but you don’t have to be Einstein to spot some serious flaws” (qtd. in Delahunty, Dignen, and Stock 216). What this movie line is implying is that a person does not have to be a comprehensive genius like Einstein to realize that there is something wrong with their theory. A lot of people compare their intelligence to Einstein’s, Einstein’s being the most intelligent.