You are, indeed, on a roll! An excellent essay; I have only a few editing tips:
The contributing factors that cause the greenhouse effect are carbon dioxide...
The 2003 European heat wave of 2003 - just say "2003" once. (Did it really kill that many people? That's incredible!)
while first world nations in which the diseases were eliminated could see them return.
The sea level rise is mainly connected to the polar ice caps, where the largest amount of ice is located. With these massive ice caps melting,
The number one contributor is water vapor, which is naturally occurring.
With 19.2% of carbon dioxide attributed to transportation fuels, 20.6% to industrial processes, and 29.5% to power stations, it is painfully obvious that something needs to be done in this area.
stopping the emission of greenhouse gases is an effort that requires all [delete of] nations to contribute.
No other planet known has borne life.
With the support of every nation and a continued stride toward the conservation of our planet, Earth, future generations will be able to enjoy what this planet has given us.