Pile of black coal lumps is isolated on a white background
Schlüsselwörter
coal,
black,
carbon,
energy,
fuel,
fossil,
industry,
power,
mining,
mineral,
rock,
natural,
resource,
environment,
pollution,
dirty,
combustion,
electricity,
heat,
burning,
fire,
plant,
global,
warming,
climate,
change,
extraction,
geology,
sedimentary,
anthracite,
bituminous,
lignite,
coke,
charcoal,
isolated,
white,
background,
pile,
heap,
lump,
piece,
solid,
dark,
rough,
texture,
raw,
material,
non,
renewable
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