Tens of millions of years.   Coal is a fossil fuel created from the remains of plants that lived  and died about 100 to 400 million years ago when parts of the earth  we â¦ re covered with huge swampy forests. Coal is classified as a  nonrenewable energy source because it takes millions of years to  form.
New Scooby episodes, in the original Scooby-Doo, Where Are You! format, were produced for each of these three seasons. Four of these episodes featured Scooby's dim-witted country cousin, Scooby-Dum, as a semi-regular character.
Daphne Blake 's family owns an extravagant mansion in Coolsville. Scooby-Doo 's doghouse (when he was a puppy) was located in the back garden of the Rogers home.The inside of the doghouse is much larger than it appears from the outside and has been shown to include a indoor pool, tennis court and many other luxuries such as a humongous kitchen.red, Scooby and Shaggy's home. When the gang grew up they split into two houses for the boys and the girls. Here they make stops when they come back to Coolsville. The two houses are close together since both are on the same letter carrier route.