christinaslee062505 christinaslee062505
  • 14-05-2020
  • Biology
contestada

What processes caused coal to form?

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patriciaparrish321
patriciaparrish321 patriciaparrish321
  • 14-05-2020

Answer:

The weight of the top layers and the water and dirt packed down the lower layers of plant matter. Heat and pressure produced chemical and physical changes in the plant layers which forced out oxygen and left rich carbon deposits. In time, material that had been plants became coal.

Explanation:

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liniachurch
liniachurch liniachurch
  • 07-07-2020

Answer:

i believe it's pressure and heat.

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