l. Fertilizer II. Insecticides III. Sewage IV. Crude oil V. Sulphur dioxide. The atmosphere can polluted by

Assessment: WAEC SSCE - Biology - 2014 (Objective) Subject: Biology

Question 1 Report

l. Fertilizer II. Insecticides III. Sewage IV. Crude oil V. Sulphur dioxide. The atmosphere can polluted by

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