Coal is created by partially decaying plants, so it contains many fossils of prehistoric plant matter Limestone contains calcium carbonate, a base.
(Coal; is created; by partially decaying plants) (it; contains; many fossils of prehistoric plant matter Limestone contains calcium carbonate, a base) (Limestone; contains; calcium carbonate)
Coal it Limestone
is created contains contains
by partially decaying plants
many fossils of prehistoric plant matter Limestone contains calcium carbonate, a base
calcium carbonate