Attention Getter: Don't knock the weather. If it didn't change once in a while, nine out of ten people couldn't start a conversation. Kin Hubbard
Problem:There is a definate change in our climate, and not for the better. This is a slow change but it is effecting us greatly.
Preliminary Evidence: The CO2 gases being omitted into our air are creating a greenhouse effect in our atmosphere, warming the earth.
Contributing Factors: The increase of CO2 gases is being caused by humans.
Thesis: The continuation of the change in the climate will be harmful for our economy. People need to make small changes in their lives and take initiative to start the process of reversing this change.
Topic sentence:It is not hard to ignore the change in our climate when the facts and data are right there for us to see.
For example, the top ten highest temperature years have all occured since 1990's. During the 1990's the surface temperature of the earth raised 1.2-1.4 degrees F. Since 1970 the sea temperatures have increased and average of 1 degree, resulting in 50% more tropical storms and hurricanes. Some say that hurricane Katrina was a result of this increase in temperature. If a rise in sea temperature continues, glaciers will melt and the sea level will rise resulting in climate changes and dangers for the coast. So far, 890 cubic miles of glacier ice has melted, so we know that this is happening. Carbon Dioxide is normal for our atmosphere, but the norm for it is 180-300ppm. Right now there is 380ppm of CO2, that is 25% more. This increasement of CO2 is a major contributing factor to the rise in temperatures.
The largest contribution to the increase in temperature and climate change is humans. Scientists say that we are the leading cause of it all. We do things that significantly add to the amount of gases that cause the greenhouse effect and make our temperatures rise. For example, everyday activities like watching tv, turning on a light, driving a car, and using a microwave omitt greenhouse gases into the air. Some of these activities include the buring of fossil fuels and biomass to make them run, these result in releasing aerosols that emit more heat into our climate.
There are many things humans can do to stagger the increase of harmful gases and fossil feuls into the atmosphere. And if enough is done we can stop these harmful gases and save our climate.