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Biology
B17: Organising an ecosystem
Feeding Relationships
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Created by
Dwayne :0
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Cards (9)
A food web is a
network
of interconnected food chains within an ecosystem.
Trophic level
= The position of an organism in the food chain e.g:
Producer
Food Chain:
A)
Producer
B)
Primary Consumer
C)
Secondary Consumer
D)
Tertiary Consumer
4
The
arrows
in the food chain represents the transfer of biomass or energy from one
trophic level
to another
Producer
= Organisms that make their own food from the
energy
in the sun
Consumers
= Organisms that eat other
organisms
for sustenance
Number of
prey
and
predators
rise and fall in
cycles
What factors can affect the number of
predator
and
prey cycle
?
>
Environmental Changes
>
Humans
hunting
Name one limit of the food chain
> Doesn't show
outside influences