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Composition, earthworms, food webs, recycling elements, nitrogen cycle and bacteria

Billie Faint

on 15 March 2011

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Transcript of Soil

Soil Made from Worms Recycling Sulphur Carbon Phosphorous Nitrogen Absorbed by plants from the atmosphere during photosynthesis. Basis of all organic materials. Used to make DNA, respiration and for photosynthesis Essential for protein production in plants Used in making proteins Nitrogen Cycle Nitrogen cycle bacteria saprophytic decompose dead plants and animals nitrifying turn ammonia in to nitrates denitrifying turn nitrates into nitrogen nitrogen fixing live in root nodules of leguminous plants and turn nitrogen in to nitrates
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