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Paper 2
(7) Ecology
water and carbon cycle
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Cards (22)
environmental changes
affect the
distrubution
of organisms
Give three environmental factors that can affect organism distribution
availability of water
temperature
atmospheric gases
The water cycle means
water
is
endlessly recylced
Energy from the sun makes water
evaporate
from
land
and
sea
, turning it into
water vapour
warm water vapour is carried
upwards
and when it gets
higher
it
cools
and
condenses
to form
clouds
water falls from
clouds
as
precipitation
onto
land
where it provides
fresh water
for
plants
and
animals
Water
evaporating
from
plants
is called
transpiration
elements are
cycled
back to the
start
of the food chain by
decay
living things are made up of materials they take from around them. name the ones plants take and use
carbon
oxygen
hydrogen
nitrogen
What do plants convert the materials they take from around them into?
complex compounds
materials used up in the food chain are eventually returned to the environment as waste products when..
organisms DIEEEEE
and
DECAYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
MATERIALS DECAY BECAUSE THEY ARE
BROKEN
DOWN BY
MICROORGANISMS
decay happens in
moist
,
oxygen rich conditions
which are
warm
decay puts
mineral
ions back into the
soil
The constant cycling of carbon is called the
carbon cycle
co2
is removed from the atmosphere by green plants during
photosynthesis
When plants and algae are eaten by
animals carbon
becomes apart of the
fats
and
proteins
in the
animal
and moves up the
food chain
When animals respire carbon is returned to the atmosphere in the form of
carbon dioxide
when animals and plants die,
detritus feeders
and
microorganisms
feed on their
remains
when microorganisms respire,
co2
is returned to the
atmosphere
animals produce waste that is broken down by
detritus feeders
and
microorganisms
the
combustion
of
wood
and
fossil fuels
returns
carbon
into the
atmosphere