1. Ecological Pyramids
Diagrams that show relationships between organisms in an ecosystem
Three types of ecological pyramids:
Numbers
Biomass
Energy
Show the relationships between the trophic levels in ecosystems (the numbers, amount of biomass, or amount of energy)

3. Pyramids of Energy
food chains and food webs have limitations
do not show how much energy is passed from one organism to the next
energy pyramids show the amount of available energy available at each trophic level
only 10% of the energy taken in by the individual at one level is passed on to
individuals at the next level
WHY?

4. Energy can`t be used because passed out as waste or can’t be eaten (60%)
Energy is used for biological processes by plants and animals such as breathing, running, growing or lost as heat (30%)

5. Pyramid of Energy Tertiary consumers 0.1 % 10 J Secondary consumers 1%
Always upright and vertical. 
Shows the flow of energy at different trophic levels. 
the more levels that exist between the producers and top consumers, the less energy is left for the top consumer
This demonstrates how important producers are to ecosystems
The wider the base, the more energy producers provide to consumers
Tertiary consumers
0.1 %
10 J
Secondary consumers 1%
100 J
Primary consumers
10%
1000 J J
Producers
100%