How can an increase in the use of burning of fossil fuels can lead to an increase in average global temperature?

burning of fossil fuels produces myriad types of greenhouse gases. usually, green house gas is important to keep the earth's temperature normal without being too cold. unfortunately, increase of fossil fuels burning in recent years have lead to excessive amount of the greenhouse gas in the atmosphere, which causes too much heat from the sun to be trapped in the earth atmosphere.

i don't know the answer