Until recently many researchers have assumed that they were helped by stones which they swallowed. In their muscular stomach these then acted as a kind of 'gastric mill'. ... Their muscular stomach is equipped with a layer of horn and contains stones which help to break up, crush and thereby also to digest food.
Until recently many researchers have assumed that they were helped by stones which they swallowed. In their muscular stomach these then acted as a kind of 'gastric mill'. ... Their muscular stomach is equipped with a layer of horn and contains stones which help to break up, crush and thereby also to digest food.
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Answer:
Until recently many researchers have assumed that they were helped by stones which they swallowed. In their muscular stomach these then acted as a kind of 'gastric mill'. ... Their muscular stomach is equipped with a layer of horn and contains stones which help to break up, crush and thereby also to digest food.
Explanation:
Until recently many researchers have assumed that they were helped by stones which they swallowed. In their muscular stomach these then acted as a kind of 'gastric mill'. ... Their muscular stomach is equipped with a layer of horn and contains stones which help to break up, crush and thereby also to digest food.
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