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In the article “Climate change may bring big ecosystem changes” by Alan Buis, researchers from NASA's Jet Propulsion Laboratory, informs us that global climate change will be a big issue for the earth's plants. They will experience dramatic modifications caused by the human's high production of greenhouse gases. According to a new NASA and university computer modeling study, in the next three centuries the increase in ecological change and stress in the earth's biosphere, will cause many animal and plant species to face competition for survival.

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In the article published in Science Daily entitled “Extreme melt season lead to decade-long ecosystem change in Antarctic polar desert”, a group of researchers from the University of Colorado at Boulders found that during the very hot summer of 2002, the McMurdo Dry Valley in Antarctica endured rough changes in its ecosystem that would have an impact for the years to follow. The team believes that this event proved that even small appearing weather events can have impacts on a region for a very long time.

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In the article "How Many People is Too Many People" by Hannah Geis, the author is very concerned about too many people on our Planet and thinks of solutions to this threat. She explores the problems facing world population and how we can ensure that our resources do not dwindle as our population expands.  Population growth is the increase in the number of people in a region and is occurring at all times all around the world. Population growth can have both positive and negative effects on countries, regions, and even the world.

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In the article “As World’s Population Booms, Will Its Resources Be Enough for Us?” you’ll read about the relation between the population and the resources available. The question that is look at in this article is how much more people can the Earth support. This article talks about a lot of predictions and theories like the ones made by Thomas Malthus because it is believed that eventually, the Earth won’t be able to support his population. Scientists start to believe Malthus was right when he said that we grow more rapidly than we grow food because we consume so much for only one person.

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