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Earthworms are involved in two pleasurable human activities that also increase food production. Gardeners like earthworms because of their beneficial effects on soil. They break up organic materials; mix these materials into the soil; break up root mats in pastures; increase soil microbial activity; increase availability of nutrients to plants; improve the soil crumb; allow better penetration of plant roots, oxygen and water into soils; increase yields; help reclaim land by increasing soil fertility. Fishermen like earthworms because some fish like them. Softcover, 31p.
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