The fossil fuels used as energy sources today were formed from the remains of plants and animals that became buried millions of years ago. What was the original source of the energy stored in these fossil fuels?
- Aheat rising from the centre of the Earth trapped by the fuels
- Bheat released by decomposers feeding on dead animals and plants
- Cmetabolic activity of the animals and plants in the oceans
- Dsunlight absorbed by producers