Earth has a lot of oxygen in the atmosphere where Mars and Venus have their oxygen locked up in carbon dioxide and in minerals. Please read this article about a time in Earth's history called the Great Oxygenation Event that led to mass extinction and then answer this question: What was responsible for introducing large amounts of oxygen to Earth's atmosphere?
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Amountain created from tectonic activity would be considered which type of landform ? a) primary landform b) secondary landform
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From the standpoint of geography,a is an internal rendering of an individual's known world
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When the soviets created the borders of their central asian and caucus republics, the paid little attention to where each regionโs ethic group lived. ethnic-related disputes exist along every sherd boundary in central asia. true false
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Earth has a lot of oxygen in the atmosphere where Mars and Venus have their oxygen locked up in carb...
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