The Big Issue of Climate Change and Global Warming Essay
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Global Warming Essay: Environmental Effects :: …
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When the total continental land mass was small or combined into a supercontinent, there was no land to divert that diffusion of warm water toward the poles, which results in currents. During those times, the global ocean became one big, calm lake, with no currents of significance. Those oceans are called today, and they would have been anoxic; the oxygenated surface waters would not have been drawn by currents to the ocean floor, and the oceans were certainly anoxic before the GOE. The interplay of those can be incredibly complex and lead to the multitude of hypotheses posited to explain those ancient events, but a leading hypothesis today is that a combination of factors, including supercontinents, variations in volcanic output, Canfield Oceans, and ice ages prevented life from gaining ecosystem dominance until the waning of the second Snowball Earth event, which was the greatest series of glaciations that Earth has yet experienced. It is known today as the , which ended about 635 mya. The study of the Cryogenian Period, which is the subject of , resulted in the term “.”
Global Warming as Religion and not Science - Number …
The Globe is Warming: Burning coal, oil and gas and destroying forests overloads the atmosphere with excess carbon dioxide, adding to heat-trapping gases that already are present in the atmosphere. Combined, these gases act like a blanket covering the earth. The human contribution to this effect is unmistakable. The part of the atmosphere where excess carbon dioxide accumulates has expanded and warmed dramatically in recent years precisely during the period when emissions from human activity have increased.
Scientists from NASA and other research institutions routinely collect temperature data from around the world and have records of the Earth’s average temperature going back to the 1880s, when temperatures were first recorded. The data shows that, globally, the last decade has been the warmest ever recorded.
Over the last century, global average temperature has increased by more than 1°F (0.6°C). While the record shows significant regional differences in warming, the long-term global upward trend is unambiguous.
— Union of Concerned Scientists