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.
New Scooby-Doo series aired as part of Kids WB on The WB Network and its successor, The CW Network, from 2002 until 2008. Scooby-Doo! Mystery Incorporated, aired on Cartoon Network from 2010 to 2013, and, Be Cool, Scooby-Doo! , debuted on Cartoon Network in 2015.cooby's speech patterns closely resembled an earlier cartoon dog, Astro from The Jetsons (1962â63), also voiced by Messick. Seventeen episodes of Scooby-Doo were produced in 1969. The series theme song was written by David Mook and Ben Raleigh, and performed by Larry Marks and Paul Costello.