Global warming: blame the humans!

Cars will be used as an example to explain as to why we should blame global warming on humans.

Cars need energy to work. That energy comes from burning gasoline. Burning gasoline gives off energy to power your car, but also gives other byproducts like carbon monoxide and carbon dioxide gasses. Trees remove some of these gasses, but because there are too many cars, some of these gasses get stuck in our atmosphere, making like a dome around our planet.

Our beautiful sun provides us with sunbeams to heat our planet. So our earth gets warm, and this warmth naturally escapes to outer space, but the dome created by gasses from car exhaust pipes prevents some of that warmth from leaving earth.

Hence our planet is slowly getting warmer, in theory.

But, could there be something else to blame?