Buthowplantsandanimalsonlanddiedoutisonethingthatpuzzlesandsurprisesmany,actuallythereisnologicalexplanationbutmostbelieveitisthemergerofPangeatodo,thatsomethinghappenedthenthatnoonecanreallyexplain.

Please segment the words:
But how plants and animals on land died out is one thing that puzzles and surprises many, actually there is no logical explanation but most believe it is the merger of Pangea to do, that something happened then that no one can really explain.