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amoryfe28p0vpwo
15.10.2019 • 
English

Josh is writing a research paper about the complexities of deep-ocean exploration. his thesis argues that deep-ocean exploration can be as complex as space exploration. read the following sources that josh found about deep-ocean exploration. which source would be most relevant for josh to use in his research paper? a. source 1 unlike antarctica, which is a continent, the arctic consists of large frozen ice sheets. however, with the onset of global warming, researchers and explorers are gaining new access to arctic regions that were previously frozen over and, therefore, unnavigable. scientists believe that valuable resources, such as oil and minerals, lie at the bottom of the arctic ocean. because of the melting arctic ice, nations adjacent to the arctic region such as russia, canada, the united states, and norway are seeking to claim these now accessible resources. russia, for instance, has used small robotic submarines to explore the bottom of the arctic ocean. nevertheless, the freezing water temperatures make it difficult to traverse this large ocean area. researchers will need to develop improved deep-sea submarines in order to better understand the bottom of the arctic ocean. scientists are examining the possibility of using space exploration technology to create better deep-sea submarines. b. source 2 for centuries, mankind has wondered what creatures lay at the deepest depths of the oceans. in the eighteenth and nineteenth centuries, sailors concluded that strange sea-monsters roamed the oceans. today, after decades of ocean exploration, scientists are still learning new things about the oceans. space exploration tends to get more attention in the news, but deep-ocean exploration also requires advanced technology and huge financial investments. for instance, consider the fact that since 1950, dozens of manned space missions have been launched by nations around the world. however, over the same period of time, only two manned submarine missions have reached the deepest ocean spot on earth, known as challenger deep. challenger deep has a depth of seven miles. at that depth, the water pressure is 1,000 times greater than what it is at the surface. to explore such an extreme environment requires advanced technologies similar to what is needed to explore space. c. source 3 did you know nasa has continually operated at least one robotic rover on the martian surface since 2004? these rovers have returned valuable information about the geology, atmosphere, and history of mars. over the past few decades, multiple probes have orbited mars and a handful of rovers and other devices have explored the martian surface. because of this fact, it is no wonder scientists know more about mars than about the deepest ocean regions on earth. in recent decades, only a handful of deep-ocean missions have explored the farthest ocean depths. these deep-ocean missions have returned some interesting data, but nasa's explorations of mars have returned invaluable information about the red planet. the robotic rovers on mars have already found ancient riverbeds as well as dried lakes. although deep-ocean and space explorations are both expensive, scientists should devote more time to investigating water on mars rather than to exploring the deepest oceans on earth.

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