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QUESTION
22. Recent changes to the animal phylogenetic tree, including the reassignments of the Lophotrochozoa and Ecdysozoa groups within the protostomes,
22. Recent changes to the animal phylogenetic tree, including the reassignments of the Lophotrochozoa and Ecdysozoa groups within the protostomes, have been made mainly due to new evidence from
(a) fossils
(b) morphological data
(c) physiological studies
(d) behavioral studies
(e) molecular systematics
