Global warming

Global warming is like when you leave a heater on in your room. The heat from the heater builds up and the temperature of your room gets hotter and hotter. Global warming is the same thing but it's happening on a much bigger scale. The heat from all the buildings, cars, and other things that we use, like electricity, is slowly building up and warming the Earth. This heat makes it harder for us to live, and it can also hurt animals and plants!