Global warming is the warming of the earth's atmosphere. For many years
humans have been blamed for causing global warming. Global warming, however, can
be caused by natural effects. One reason is that the earth is constantly going through
periods of warming and cooling. Second the two most abundant greenhouse gases water
vapor, and carbon dioxide both occur naturally. Third the earth is not the only planet
that has had a change in temperature over the past few years, other planets have also
had changing temperatures. I belief that global warming is caused by natural things and
not humans.
The first reason why I belief humans are not the cause of global warming is that
the earth is constantly going through periods of warming and cooling. The earth has a
yearly cycle it goes through. People that think that global warming is manmade say that
we are in the hottest period in history . This is not the hottest period in history the
Medieval Warm period, which occurred from around A.D. 900 to 1300, was a period of
substantial climate warmth . After the Medieval Warm period there was a period of
climate cooling known as the Little Ice Age. The Little Ice Age occurred around A.D.
1300 to 1850. Today the earth is in the warming period.
The second reason is that the two most abundant greenhouse gases both occur in
the environment naturally. One of the most abundant green house gases water vapor
accounts for between 1% to 4% of the earth atmosphere
(www.humanscauseglobalwarming.com). Carbon dioxide which is the greenhouse gas
people say is causes global warming accounts for only .0387% of the atmosphere
(www.humanscauseglobalwarming.com). Also 99% of all carbon dioxide that is in the
atmosphere is caused by decaying plants and ocean activity
(www.humanscauseglobalwarming.com).
The third reason is that earth is not the only plant that the temperature has
changed. If the earth's temperature is rising because of manmade things then why would
other plants temperatures by rising too. Other plants in our solar system that are heating
up are Mars, Pluto, and Jupiter(www.livescience.com). The sun fluctuates on an eleven
year cycle (www.livescience.com).
The reason so many people belief global warming is a man made problem is
because that is all the media shows. The media does not show how global warming can
just be a natural occurrence. The media also tries to blame the increase of bad weather
on global warming but it is cooler weather that causes them not warmer weather. The
ice caps are growing and shrinking like they always have, and the ozone layer is just
fine (www.humanscauseglobalwarming.com).
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