Energy-matter relationship.rtf - About Pyramids Energy...

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About Pyramids Energy pyramids are used to show how much energy is available in each of the different trophic levels. Because the amount of energy is proportional to the amount of matter in an ecosystem, these pyramids can also show how much matter or biomass is available in each trophic level. When you examine an energy pyramid, you see that the base of the pyramid is bigger than the levels above it, and each individual level is smaller than the one below. The base is always bigger because this makes the entire structure stable. Energy pyramids are set up with the organisms with the most available energy at the bottom. The first level is the producer trophic level. The second level is made up of the primary consumers. The third level is the secondary consumers, and the fourth level is the tertiary consumers. Since they are the base of the pyramid, the producers are the level within ecosystems that have the most energy available-followed by the primary consumers, secondary consumers, and then the tertiary consumers. Since matter and energy are directionally proportional (as the amount of
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