First Children's Encyclopedia by Dorling Kindersley - page 225
223
Digesters
Decomposition in the
soil is helped along by
the endless action of
worms and bacteria.
These animals are an
important part of the
carbon cycle.
All living things
A diamond.
Plants and
animals die
and their
bodies decay.
Waste disposal
When animals
die, their bodies
break down and
decompose.
Waste fertiliser
Part of you
might once have
been part of a
dinosaur. Why?
Because like all
living things, dinosaurs
produced waste and
their waste became a
part of the never-ending
carbon cycle.
Fossil fuels
Sometimes
the remains
of organisms
are exposed to
extreme pressure
and heat. Over
millions of years,
they turn into
carbon-rich fuels,
like coal and oil.
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