What best describes how fossil fuels from?

Where can you find a wolly mammoths? What is a calpolli? Where is the scorpion pit on mythology island? Where there female cromagnons? Why did the dun cow swainsthorpe close? What class are the archaeopteryx in? What is the origin of 3 billy goats gruff? What did you think early people used stones and bones to make tools? How many tv shows are there? What is a predetore? When did australopithecus die out? The half-life of carbon-14 is 5370 years. The carbon-14 levels in a fossil indicate that 6 half-lives have passed. How old is the fossil? Why are indices better than simple measurements for comparing fossil specimens? What crops did the people of the Paleolithic age grow? What were the natural predators of trilobites? Did cavemen really invent fire? How much money does a potbelly pig cost? Who is the mythical monster that was half human and half bull? What is Origin of petroleum? When was In Between Evolution created?