Sunday, 22 May 2011

4.7 Energy efficiency

Explain why only about 10% of energy is transferred from one trophic level to the next

Pyramid of Energy

(Measured in Kj)
As you can see 100% producer, only 10% makes it into the primary consumer and only 1% of the 100% makes it into the secondary consumers.
This is because energy will be lost from respiration, not all of the 100% is actually available to the  primary consumer, for example a mice cannot digest cellulose from plants which contains energy, and it will be lost in the form of faeces.


  1. your blog is fast becoming one of the best in the group. Congradulations I can readily see all the extra work you are putting in.

  2. Any one can easily understand from your post about the energy efficiency such that it is showing the all diagram very clearly. And I was searching for this from long time. I really appreciate your work.

  3. Energy Efficiency and Renewable Energy invests in clean energy technologies that strengthen the economy, protect the environment.