In a few mammals, which include hedgehogs and porcupines, the hairs have already been modified into tricky spines or quills. They're protected with thick plates of keratin and function security against predators. In accordance with one 2020 report, hair consists of two constructions: the strand of hair alone, or the https://jaredluciq.bloggadores.com/35134695/helping-the-others-realize-the-advantages-of-hair-salon-in-ottawa