Answer:
I would start by explaining that energy comes to our world from the sun as visible light and warms the surface of the world. This warmth is re-radiated back into space, but some is blocked by greenhouse gases in the atmosphere, keeping the world warmer than it otherwise would be. I would then say that if humans increase the amount of these greenhouse gases in the atmosphere, as we do by burning coal and oil, then more heat is trapped on the earth. This can interfere with nature and cause damaging climate change.