What are the greenhouse effect is the increase in the average temperature of the Earth due to the presence of greenhouse gases such as carbon dioxide, water vapor, methane, etc. This effect, which is known to be happening, has been going on for millions of years and is a good thing. It makes the Earth habitable.Global warming is an increase in the Earth’s average temperature due to a manmade increase in the concentrations of greenhouse gases. For example, the concentration of carbon dioxide in the atmosphere has increased by more than 30% since 1800 due to the burning of fossil fuels such as coal, oil, and natural gas. Global warming is thought by many scientists to be occurring but it is still uncertain, it is more likely occurring than not. The negative effects of global warming could be serious by the middle of the century and very serious by the end of the century.One of the primary actions that have been proposed to deal with global warming is to reduce the number of fossil fuels that