▶ Your Answer : In the lecture, the lecturer contends that the theories suggested in the reading are groundless. This cast doubts on the reading passage's point that distinctive physical feature that Lambeosaurus had served as several roles.
To begin with, Lambeosaurus had an axe-shaped crest on the top. The speaker states that it is doubtful that the crest was used to attract their mates. This is because that most reptiles usually entice their mate through their behaviors or sounds. For example, crocodiles move their head to make the noise,which let them mate with females. This is contradictory in the reading's claim that the dinosaur attracted females with their large crest.
In addition, the lecturer maintains that the dinosaur's crest was less likely to use for combating. The professor points out that Lambeosaurus had the crests backward rather than forward. On top of that, unlike solid Triceratops' horns, Lambeosaurus' crests had been so fragile. This view in direct opposition to the reading passage's assertion that the dinosaurs used their crest for tools to combat.
Lastly, the speaker asserts that the crests did not provide the dinosaurs with enormous air while eating foods underwater. The reason is that they were massive, so if the crests had preserved air, the dinosaurs would have used up the air in only few second. Rather, It would be plausible to inhale deep breath. This refutes the reading's insistence that the dinosaur employed their crest to save air.
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