Question

how coal is formed mention the factors which decide the variety of coal​

Answer 1

Hyee mate !!

Coal is formed by the solid remains and fossils of plants under many layers of soil and rocks after millions of years.

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Answer 2

Answer:

Increasing temperature and pressure from burial are the main factors in coalification. To form coal, the following steps are followed (Figure 2 illustrates these steps): Plant matter in mires and wetlands, such as ferns, shrubs, vines, trees, and algae dies and accumulates on the surface.