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| Column-$I$ | Column-$II$ |
| $(a)$ स्थलीय घोंघा | $(1)$ यूरिया |
| $(b)$ उपास्थिमीन (Cartilaginous fishes) | $(2)$ यूरिक अम्ल |
| $(c)$ समुद्री मछलियाँ | $(3)$ अमोनिया |
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