The mammalian heart is a remarkable pump that keeps warm-blooded animals alive. Its internal structure is fundamental to how blood circulates around the body.
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Should councils be allowed to fluoridate tap water without a local referendum to fight tooth decay?
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Which British woodland bird's name literally describes the sound it makes while feeding on tree bark?
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Rank these British music knighthoods and damehoods by the year they were officially bestowed.
π΅ Music Β· 26 votes