Caring for Earth
The Gas Effect, Part 1

The Gas Effect, Part 1
Reading Level
     edHelper's suggested reading level:   grades 7 to 9
     Flesch-Kincaid grade level:   8.31

     challenging words:    heat-trapping, nitrous, nonrenewable, remainder, colorless, radiation, methane, agriculture, ozone, atmosphere, burning, northeastern, production, dioxide, carbon, vapor
     content words:    New Jersey, United States, Both CO2, Industrial Revolution, In The Gas Effect

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The Gas Effect, Part 1
By Trista L. Pollard

1     Imagine a warm winter day in New Jersey.... Wait a minute, a warm winter day in New Jersey? That sounds impossible! You cannot have a warm winter day in the northeastern United States. That is just like having snow in southern California. Well, with global warming our seasons on Earth may never be the same again! Global warming is a phenomenon where the Earth's temperature increases over time due to the production of greenhouse gases. Greenhouse gases, which occur naturally in the Earth's atmosphere, trap the sun's heat to keep the Earth warm enough to sustain life.
2     Carbon dioxide (CO2), methane, nitrous oxide (N2O), ozone, and water vapor are the main greenhouse gases in our atmosphere. In fact, CO2 is the most important of these greenhouse gases. Ozone is a form of oxygen that is found in the Earth's atmosphere about 20 kilometers (km) above the Earth's surface. The ozone layer helps to absorb the ultraviolet radiation (UV) from the sun. The sun's UV radiation can damage skin and other living cells. CO2, N2O, and methane are colorless gases; however, N2O is the only gas of the three that has an odor. Both CO2 and N2O are not flammable. Methane is flammable. These three gases provide the shield that keeps the Earth warm enough to sustain life.

Paragraphs 3 to 4:
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