When the heat and the light of the sun enter the atmosphere but cannot get out as they are trapped in the earth's surrounding by the greenhouse gases and thus resulting in temperature rise.Heat rays from the sun is what keeps the Earth warm. But if these heat rays get trapped in the atmosphere, they would cause the temperature to rise. Green house gases such as Carbon Dioxide, Methane, and Nitrous Oxide traps these heat rays and prevent them from returning to space. This results in global warming.
Another important reason for global warming is large amount of carbon dioxide produced from burning fossil fuels for different purposes especially for power generation on various power plants.Another reason for global warming is the excessive emission of Carbon Dioxide to the atmosphere. Burning of fossil fuels is the main source of Carbon Dioxide emission.
Global warming is also caused due to less knowledge about it.
I think you should present this idea in another way.
You have some very good points. :)