Nature of ecosystems

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Energy Flows

Energy from the sun is fixed by plants in photosynthesis. It is stored as chemical energy in plants and then is passed through the ecosystem, up the food chain. It leaves the system as heat energy (movement and respiration) or as waste (excretion)

(1) THE SUN - 100,000 units of energy

(2) PLANT ABSORPTION - 1,000 units of energy

(3) HERBIVORE CONSUMPTION - 100 units of energy

(4) CARNIVORE CONSUMPTION - 10 units of energy



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