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An experiment was conducted to determine histological effects of CuSO4 and ZnSO4 on earthworm, Eudrilus eugeniae. Higher doses of CuSO4 and ZnSO4 caused deleterious effects on the skin of earthworm. Such histological changes could be considered as a threat of metal pollution.
Histology, Eudrilus eugeniae, CuSO4, ZnSO4, Sub-lethal dose, Body wall