Humus.
It is called humus.
coal
Petroleum is made of decayed dinosaurs.
Fossil fuels (coal, oil, natural gas) are all formed from decayed organic matter that was buried for millions of years, which became chemically changed to denser complex hydrocarbons. Peat is a less-compressed form of this material, produced more (relatively) recently.
That could be a 'reef' or an 'archipelago'.
It is called humus.
It is called humus.humus
Coal is formed by the remains of dead and decayed plants, while Petroleum is formed by the remains of dead and decayed animals and plants
It is called humus.humus
coal
Plants which died and decayed and were buried by later material.
Plants which died and decayed and were buried by later material.
Petroleum is made of decayed dinosaurs.
Dead Organisms Are Compressed By Dirt or Remains Of Dead Animals.
Organic Sedimentary Rocks are formed from remains of plants and animals.
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They are both Igneous rocks and have both been formed from decayed, ancient, organic material.