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Free-living and Plant-Parasitic Nematodes (Roundworms)
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This lesson introduces learners to the world of nematodes (roundworms).
Soil Secrets
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In this activity (located at the bottom of the page), learners investigate soil and explore the creatures that live in it.
Living Clocks
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In this activity about daily rhythms (on page 17 of the PDF), learners will explore circadian patterns in humans, animals and plants.