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Biology
What characteristic could show that a bird might be ready to reproduce?
Biology
What characteristic could show that a bird might be ready to reproduce?
Longer Beak
Eye Color Changes
Brightly Colored Feathers
The Bird Talks
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Which animal is active at night?
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What sea mammal has gotten trapped frequently in tuna fishing nets?
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Which nutrient group is used to help grow and repair cells?
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What type of creature generally lives on land but starts life in the water?
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Which of these brain structures is part of the limbic system?
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How many stages of sleep are there?
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What is whole blood minus the cells called?
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What was the dominant invertebrate of Mesozoic seas?
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