Question

state the role of carbon dioxide in warming the earth environment

Answer 1

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Here is your answer...
Carbon dioxide is a greenhouse gas. A layer of greenhouse gases – primarily water vapour, and including carbon dioxide, methane and nitrous oxide – acts as a thermal blanket for the Earth, absorbing heat and warm the earth environment

Answer 2

CO2 IS ONE OF THE MAJOR GREEN HOUSE GASES.
Carbon dioxide emissions therefore are the most important cause of global warming. CO2 is inevitably created by burning fuels like e.g. oil, natural gas, diesel, organic-diesel, petrol, organic-petrol, ethanol. The emissions of CO2 have been dramatically increased within the last 50 years and are still increasing by almost 3% each year.