Mystery #3Tier 2energy / fossil fuels
Where did the coal, oil and gas we burn actually come from?
Every time a car drives or a power station hums, it is usually burning coal, oil or gas that was dug up from deep underground. That fuel holds an astonishing amount of energy, packed tight and waiting to be released. But it did not start out buried in the rock. So where did coal, oil and gas actually come from?
Your guess
What do you reckon coal, oil and gas were made from, all those years ago?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.