Revise GCSE Physics

Question:Is the Greenhouse Effect a good thing or a bad thing?

There would be no life on Earth without the Greenhouse Effect.

So it is a very good thing.

The greenhouse effect keeps the average temperature on Earth at 15oC. Without the greenhouse effect it is estimated that the average temperature would be -18oC; which means that there would be almost no liquid water on Earth and life is unlikely to have evolved.