Tuesday, May 24, 2011

4.7


+  Pyramid of Energy  Producer = 100% -> primary consumer = 10% -> secondary consumer= 1%
eg: Grass -> Rat -> Owl  100kg -> rat only gets 10% of the energy because: Respiration, rat can't digest celulose, so it is lost in faeces.
+ Owl only gets 1% of energy  because: respiration, and energy used in flight etc.
+ Eventually all levels die and are broken up by decomposers.
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1 comment:

  1. jobuMay 26, 2011 at 10:39 PM

    finally! Great notes everything up to date now for the examination

    ReplyDelete

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