Question

Is coal a biotic resource?

Answer 1

Yes coal can be considered as biotic resource as it is obtained by decomposition of living organisms....

Answer 2

Biotic resources are obtained from the biosphere (living and organic material), such as forests and animals, and the materials that can be obtained from them. Fossil fuels such as coal and petroleum are also included in this category because they are formed from decayed organic matter.
Thus, coal and petroleum can be considered as biotic resources

Hope this information will clear your doubts about this topic