Why do we have two of some organs, but only one of others?

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SIMON BARTLETT

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BBC Science Focus Magazine

30 December, 2025

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Whether mutually beneficial or a parasitic nuisance, Nature’s symbiotic relationships are as multifarious as they are marvellous, says John Lewis-Stempel

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Exactly my bag

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Why do we have two of some organs, but only one of others?

BBC Science Focus Magazine

30 December, 2025

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