Fact: Deposits of organic materials from decayed plants and animals buried underground formed fossil fuels.
Three hundred million years later...
Eventually, C found himself in a cold and gloomy environment. C was afraid because his surrounding was so dark that he couldn't see anything. He wanted to get out of this place, but dirt and rocks were squeezing him from every direction. C couldn't move and was trapped underground.
He missed all the happy times traveling around the world on the Wind Way Express, but now they were only in his memories. Tired and depressed, C eventually fell asleep and had a beautiful dream.
Yeah I am free!
Fact: two basic methods of coal mining are surface mining and deep underground mining.
In his dream, C was flying freely in the sky. Warm sunshine was pouring upon him and a gentle breeze was brushing his face. He was so happy in his dream that he temporarily forgot the reality, which was just a terrible nightmare.
Three hundred million years went by in his dream. One day, C was woken up with a shuddering jolt. The earth was shaking violently.
Fact: Fossil fuels include crude-oil, coal, and gas. It takes millions of years to form fossil fuels, so they are non-renewable energy.
All of a sudden, a strong force lifted him up. After a while, which is about ten minutes, C saw the sunlight again. Although the light was too strong that he could not open his eyes, the familiar warmth made him realize: He was free!
When his eyes slowly adjust to the light, C found that he was on a train and bonded with many other carbons. He was happy as he found so many friends. They talked with each other excitedly and the train was immersed in a rejoicing atmosphere.
Fact: Coal is usually transported by railroad, truck, and ship.