Bivalves 0.0 / 5 ? GeologyF795A2/A-levelOCR Created by: Maria5Created on: 24-05-17 20:03 2341 Across 1. What phylum to Bivalves belong to? (8) Down 2. What class to Bivalves belong to? (8) 3. What is the shell itself secreted by? (3, 6) 4. When did Bivalves first evolve? (8)
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