one is brown, and one is black.
hahaha nahh, the black coal can produce less water than the brown with the same volume therefore black coal is more efficient.
one is brown and black but one is more efficient, guess which one ;)
peat is soft and the others aren't
Black coal is an ideal fuel as it contains less water than brown coal and thus provides more energy than the same amount of brown coal.
Black jet usually has a shine, while coal is usually more of a solid black.
Coal is a Brown Black sedimentary rock.
one is brown and black but one is more efficient, guess which one ;)
peat is soft and the others aren't
Black coal is an ideal fuel as it contains less water than brown coal and thus provides more energy than the same amount of brown coal.
Black jet usually has a shine, while coal is usually more of a solid black.
Coal is a Brown Black sedimentary rock.
colour
black or brown
Black coals are made from dead plants that have been compressed over millions of years but whit coals are made from compressed wood chippings, almond peals, etc. Black coal is nonrenewable but white coal is renewable.
A coal looks like this, a piece of rock that is black to brown.
Jet is a form of coal (lignite); onyx is a variety of silicon dioxide.
They are all formed from the sedimentation of plant matter.
These are same