What is the greenhouse effect? how does it occur and why is it important?

 is the condition where the incoming solar radiation passes through the atmosphere while the outgoing or reflected terrestrial radiation is blocked by gasses and clouds in the atmospheres. this make the earth retain most of the terrestrial radiation which in turn warm the earth extensively  than it would be resulting to global warming that  accelerate some geographic activities like ice melting , desertification, shifting of agricultural area ect

The greenhouse effect happens when greenhouse gases are trapped in a close dspace, and cause humidity and heat to rise. This happens outside two, within the atmosphere, and makes icebergs melt . It helps create global warming

Answerbecause of improved transportation, communication, and other advantages;