fossil fuel The energy-containing materials which were converted over many thousands of years from their original form of trees, plants and other organisms after being buried in the ground. Physical and chemical processes occurred in the Earth's crust that changed them into coal, peat, oil or natural gas

envir.

combustíveis fósseis

fossil fuel

: 11 phrases, 6 sujets

Écologie	2
Électronique	1
Environnement	3
Finances	2
Impôts	1
Industrie de l'énergie	2

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