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Lesson 43

Ecological Pyramids

QuestionAnswer
First Law of Thermodynamics Energy is neither created or destroyed, but instead changes from one form to another
Second Law of Thermodynamics When energy is transformed from one form to another, some usable energy is lost as heat
Net Primary Productivity food stored in the form of starch in producers (plants)
Ten Percent Rule about 10 percent of energy is lost at each level of the energy pyramid
Energy Pyramid representative figure showing the decreasing numbers of organisms that fit into the categories from producers to final consumers
Decomposers organisms that break down organic matter to create inorganic matter, they recycle nutrients
Pyramid of Biomass graphic illustrating the total dry weight of the species at each level of the energy pyramid
Biomass the total dry weight of all living organisms within a designated area
Pyramid of Numbers graphic illustrating the number of organisms at each level of the energy pyramid
Created by: ecotteacher
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