The greenhouse gasses let in rays from the sun but don't let them out. ... High up in the atmosphere, a layer of ozone protects the earth from the suns ultra violet rays which cause skin cancer. ... Experts predict that global warming will cause temperatures to rise, melting the polar ice caps, raising sea levels to flood coastal areas and resulting in large-scale changes in climate and agriculture around the world. ... But the world could also be inhabitable if the temperature drops by five degrees. ...

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• Grade Level: High School

It is now widely agreed that even the potential contribution of warming to sea level rise would be swamped by other more important factors (Moran, 1999). ... It could also threaten human health, and harm birds, fish, and many types of ecosystems. ... The sun's energy drives the earth's weather and climate, and heats the earth's surface. Because the sun heats the Earth's surface, the earth uses this heat as energy and radiates the energy back into space. ... Strategies of Reduce Global Warming Impact A rise in global average temperature does ...

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The greenhouse effect is the rise in temperature of the Earth because certain gases in the atmosphere such as water vapor, carbon dioxide, nitrous oxide, and methane, trap energy from the sun. ... They are also responsible for reducing ozone in the stratosphere. ... Warmer temperatures also make water expand. When water expands in the ocean, it takes up more space and the level of the sea rises. ... Coastal flooding also may reduce the quality of drinking water in coastal areas. ...

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• Grade Level: High School