Energy flows linearly through an ecosystem, entering from the sun and leaving as heat to the atmosphere. Elements, however, must be constantly recycled as there is no external source continually replenishing them like the sun provides energy.
L'energia fluisce linearmente attraverso un ecosistema, entrando dal sole e uscendo come calore nell'atmosfera. Gli elementi, invece, devono essere riciclati costantemente poiché non esiste una fonte esterna che li rifornisca continuamente come l'energia.
| Front | Compare the movement of energy through an ecosystem with the movement of elements such as nitrogen or carbon. |
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| Back | Movement of energy & elements:
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