Based on a recent study, it is believed that the initial louse species to inhabit a mammalian host originally evolved as parasites of birds. This transition, which occurred tens of millions of years ago, marked the beginning of the enduring relationship between mammals and lice. This coevolutionary process provided ample opportunities for lice to expand their presence to other mammalian species.
PTELook at the text below. In 35 seconds, you must read this text aloud as naturally and clearly as possible. You have 35 seconds to read aloud.
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Beginning in 35 seconds.