E1-Grassy Narrows
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PRODUCERS?
An organism that makes its own food through photosynthesis Form the foundation of the food web.
CONSUMERS?
A predator that eats another organism for energy Can be primary, secondary, tertiary, top
Energy also cycles through an ecosystem Generally we model these relationships using
food chains or food webs
—- energy in the food cannot be accessed by the animal and are excreted as waste
60%
Energy is the food is used to run cellular processes
30%
energy is used to make body tissues such as bones, muscles and fat
10%
—energy available in the food consumed is available for the next consumer
Only 10%
How much energy is lost in every transfer?
90%
Energy pyramids show…
the amount of energy consumers obtain as energy flows through the ecosystems
More levels between producer and consumer the…
less energy is left from the original energy produced
How do toxins build up in an ecosystem???
Bioaccumulation and Biomagnification