Global Warming
by Lillian Bonar
Essay: Global Warming
Pages: 11
Rating: 3 stars
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For decades societies have been concerned about climate change, and in recent years it has sparked a debate as
to whether the earth is warming due to causes by humans or through a natural progression. There are scientists
on both sides of the debate, but one thing that they can agree on is that the earth is in fact warming.
Studies have indicated a rise in the carbon dioxide levels (CO2) in the earth’s atmosphere that can be attributed to
the what is known as the greenhouse affect (Simon, Reece, Dickey, 2007). Natural occurring gases such as carbon
dioxide, methane, and water vapor act as source for trapping heat into the atmosphere, however CFC’s or
chlorofluorocarbons are man made synthetics (Simon et al., 2007). These synthetic gases accumulate to the
already natural gases and increase the amount of heat that gets trapped in the atmosphere (Simon et al., 2007).
Some sources indicate that humans have been increasing to the rise in carbon dioxide and methane levels as well
(Stanford Solar Center, 2008). The Stanford Solar Center (2008) also notes that the increase in carbon dioxide
levels is due to the burning of fossil fuels and the change in land usage, while methane level increases are a result
of agriculture.
Within the last decade are concerns about global warming have heightened and with good reason. The rate at
which the earth is warming is what is so alarming, since it can have such a profound negative impact on the
ecosystem. Simon et al., (2007) note that prior to the industrial revolution the concentration of CO2 levels in the
earth’s atmosphere was roughly 280 parts per million (ppm), however today’s levels are at 385 ppm and still
climbing. The earth’s oceans are always in a constant exchange of carbon d...
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