From smelly poos to dribbly goos, bloody squirts to growing spurts: bodies are amazing - and disgusting! Have you ever wondered how a pizza becomes a poo? What turns bogies black? Why do you need to trim your toenails? Find out about farts, hearts and itchy parts in this weird and wonderful look at the body's super systems.
This is Book 1 in the Why Do I...? Series. See all Why Do I...? books here.
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