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Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? A. 5 B. 3 C. 7 D. 1
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Out of the seven main animal groups (fish, mammals, birds, insects, reptiles, amphibians, and arachnids), how many contain members with internal backbones? A. 5 B. 3 C. 7 D. 1

User Agus Mathew
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The answer is A. 5 there are 5 groups
User Willis Blackburn
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