Global Warming, a Global Problem

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Global warming

Global warming has been a hot topic in recent decades. According to the Climate Literacy, global warming refers to is a natural phenomenon whereby heat-trapping gases in the atmosphere, primarily water vapor keep the Earth’s surface warm. Human activities, primarily burning fossil fuels and changing land cover patterns, are increasing the concentrations of some of these gases, amplifying the natural greenhouse effect.. I had learned some basic concepts about global warming when I was in high school: how the greenhouse gas causes global warming, what we can do to reduce the greenhouse gas emission and the effects of global warming. I gathered the earth will be in big trouble as we continue to waste the resources in ours planet so we should save the energy to reduce the CO2 emission in order to slow down the greenhouse effect. As an economics student, I think economic development has a great impact on the environment. Therefore I picked this course as one of my elective classes. In order to alleviate the effects of global warming, scientists have developed lots of new technology to slow down global warming without lowering our quality of life. Meanwhile, I had some misconceptions about global warming before I took this class. First, CO2 production is the mainly source for global warming. Second, my high school teacher used greenhouse to explain greenhouse effect. Greenhouse is a house which is made of glass. It has glass walls and a glass roof, which keep greenhouse warm inside. As sunlight shines in, it warms the plants and air inside. But the heat is trapped by the glass and can't escape. Therefore the greenhouse gases act as the glass walls and glass roof to trap the heat from the sun. During the day, the sun shines through the atmosphere. Earth's surface warms up in the sunlight. At night, earth's surface cools, releasing the heat back into the air. But some of the heat is trapped by the greenhouse gases in the atmosphere. That's how the...
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