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biology
carbon cycle
main processes
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Created by
caitlin fay
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Cards (10)
photosynthesis
light
6CO2
+
6H2O
—>
C6.H12.O6
+
6O2
chlorophyll
photosynthesis (word)
carbon
dioxide
+
water
—>
glucose
+
oxygen
feeding
animals eat
plants
and other
animals
carbon
is built up into
organic
compounds
transferred
up
food chain
2. respiration
they
respire
and
release carbon compounds
back into
atmosphere
3a excretion
removal of
waste products
that have been produced by
body
or
toxic material
from
environment
removal of
cO2
+
water
—>
respiration
3b egestion
removal
of
food
that has not been digested or absorbed e.g fibre
4. decomposition
carbon
compound
in dead
plants
and
animals
and in faeces from
egestion
(3b) are broken down by
simpler
products.
decomposes
respirate
(release CO2)
5. fossilisation
-environment conditions
are not favourable for
decomposition
(
waterlogged
or
anaerobic
) organisms do not
decay
-preserved large quantities
(peat in bog) change to
fossils
to produce
fossil fuels
6. combustion
coal
,
oil
and
gas burned
and return to atmosphere as
CO2
(
carbon
)
carbon cycle
1..
feeding
2.
respiration
3.
excretion
and
egestion
4.
decomposition
5. fossilisation
6.
combustion