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Because organisms use food energy for
movement, growth and daily activities,
there is only a portion of energy available
for the next organism in the food web.
energy for
movement
energy for energy for
growth hunting
An energy pyramid is a way Approximately 10% of the
to show the different levels energy from one level is
of stored energy within an transferred to the next
ecosystem. As you move higher level. In this
up the pyramid, less example, the top-level
energy is available. consumer receives
only a small amount
of energy that
originated in the
producer level.
An ecosystem can only support a limited number of trophic feeding levels. There are many
more organisms at the producer and first-level consumer levels than at the higher levels of the
energy pyramid.
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