Biology
What is the fin on the backs of fish, some whales and dolphins called?
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What cells carry messages from all parts of the body to the brain?
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What animal builds lodges, dams up rivers and has large front teeth for gnawing?
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What substance is produced by flowers and sometimes causes hay fever?
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What bird became extinct when settlers came to the island and let loose rats, which killed the birds?
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Which of these is the correct order of a chicken's life cycle?
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