September 8th - Pyramids

 Hello. I know that today was somewhat complicated with all those pyramids but hopefully you got the idea that these pyramids are representations of energy flowing from one trophic level to another. Remember, energy pyramids show that only about 10% of the energy available within one trophic level transfers to the organism that eats it.

Biomass Pyramids show the living tissue mass available from each trophic level. And, pyramid of numbers show the numbers of individual organisms at each trophic level. Remember, some of these pyramids can sometimes look odd but usually they look like pyramids. You need to know how to draw and label each of the three types of pyramids.

If you need assistance, you can read about ecological pyramids in your textbook on page 72-73.

Mr. Jay