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... Behind the scenes, and especially among space scientists, there is renewed attention to natural changes in climate due to the Sun. Is the cause of global warming man-or sun-made? ... As you know, it gets warmer outside if the sun is shining brightly on a summer day. ... In order for the Earth to remain a constant temperature, according to Parson “the Earth must retain a balance between the energy provided by the sun and that returned to space by the Earth”(9-11). ... Global warming may be a natural process but it has been enhanced by deforestation, making it a more man-made issue. ...
As mentioned before the earth is absorbing solar energy, which is expected to be constant, but is the sun a constant or variable star? According to Oliver, the sun is considered constant or nearly constant because if the sun’s surface emits energy faster than the core can produce it, then it will contract and conversely, if energy is given out too slowly, expansion will occur (378). ... The solar magnetic activity is a result of the sun’s cycle, which “consists of variations of sun spot numbers as well as varying amounts of radiation”(Friis and Lassen). ... The process of global warming is a combination of man-made as well as sun-made, both having an effect on the Earth’s global mean temperature.
Approximate Word count = 1094
Approximate Pages = 4.4
(250 words per page double spaced)
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