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.
In most incarnations of the series, Scooby is regarded as a unique Great Dane dog who is able to speak in broken English, and usually puts the letter  R  in front of words and noises made. Other incarnations, such as A Pup Named Scooby-Doo, present talking dogs as quite common in the larger fictional universe.cooby-Doo, Where Are You! premiered on CBS on September 13, 1969 at 10:30 a.m. EST and ran for two seasons, for a total of 25 episodes.