Grade 5 · Science · Lesson 17

Ecosystems & Food Webs

An ecosystem is every living thing in a place — plants, animals, fungi, and tiny microbes — together with the non-living parts they depend on, like sunlight, water, soil, and air. A pond, a forest, a desert, and even a single rotting log can each be an ecosystem.

What this lesson teaches

1Define an ecosystem as living and non-living things sharing a place
2Identify producers, consumers, and decomposers by their role
3Trace how energy flows from the sun through a food web
4Explain why every link in a food web matters

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