Coal is a type of organic sedimentary rock formed from dead plants.
sedimentary
Metamorphic rock
They are both organic sedimentary rocks.
rock coal
No. Coal is an organic sedimentary rock.
nope coal is a rock
Metamorphic rock
organic rock
coal
Coal is classed as a sedimentary rock.
;from coal
yes, a organic sedimentary rock
No. But a Sedimentary rock, Organic.
coal
Coal.
All types of coal are sedimentary, except anthracite which is metamorphic.
coal
A type of rock? Possibly coal, which is decayed plant material, compressed and turned into a 'rock-like' material.