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O processo de formação dos combustíveis fósseis aconteceu por volta de 250 milhões de anos, devido a galhos, troncos, folhas e raízes de grandes árvores que depois de mortas foram soterrados por sedimentos associados a elevadas temperaturas e pressão. Esse processo deu origem a quatro tipos de carvão mineral. Assinale a assertiva que representa corretamente um desses tipos de carvão mineral.

Resposta:

I'll respond using the Portuguese language from Brazil, geography question about "Geology and Geomorphology" as follows:

A correct answer is letter B) Lignite: It is the second stage formed by a dark material that still has a high percentage of water and a low percentage of carbon, with approximately 70% of carbon.

This type of coal is formed through the process of coal formation, which occurred around 250 million years ago, due to the burial of large tree trunks, branches, leaves, and roots under sediments associated with high temperatures and pressure. This process gave rise to four types of mineral coal.

Lignite is the second stage of coal formation, which still has a high percentage of water and a low percentage of carbon. It is an intermediate stage between peat and sub-bituminous coal, with a carbon content of around 70%. This type of coal is widely used in power generation and industrial processes.

Please let me know if this meets your requirements.

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