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Excretory materials - PowerPoint PPT Presentation

Excretion

Excretion. Page 127. SyllabusObjectives. Discuss the importance of excretion in the living organisms Give examples of substances excreted by animals and plants State the means by which excretory products are eliminated from the plants and animals. What is Excretion?. Introduction.

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Energy flow through ecosystems

Energy flow through ecosystems. Energy flows through an ecosystem, being transferred from one organism to the next. Energy flows in one direction, obeying the law of conservation of energy. . Energy cannot be created or destroyed, only changed from one form to another.

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Excretory materials - PowerPoint PPT Presentation

Excretion

Energy flow through ecosystems