GEOG 2EI3 Lecture Notes - Lecture 6: Growth Factor
2 May 2012
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The plant matter is available for humans to eat. Energy from the sun gets locked into these plants. When this plant (eg. apple from the tree) is eaten: release chemical energy and use it. We are all fed by sunlight because what we eat is fed by sunlight either directly or indirectly. When converting from one form of energy to another: there is waste: not a purely efficient process. Each level of food chain is known as trophic level. Herbivores eat the producers and are in turn source of energy for higher level consumers (carnivores) Decomposers will feed on all these organisms after they die. Each time you move from one form of energy to another there is waste. 1st trophic level: have the producers (plants): take sunlight and produce organic matter. Break down plant and animal material products into carbon dioxide, water and inorganic forms of phosphorus and nitrogen: decomposer food chain also has trophic levels:
