TOEFL T P O 4 - Integrated Writing Task
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The reading and the lecturer are both about the theory that dinosaur are endotherms, which is a charateristic that allow to keep the same internal temperature of the body in any kind of weather. The author of the reading believes that dinosaur are endiometric. The lecturer casts doubt on the claims made in the article. She thinks that dinosaur are not endotherms animal.
First of all, the author points out that the dinosaur lived in the polar area. It is mentioned that there were discover fossil in the polar area. The listening rebuts this argument. She says that in the past the polar region was warmer. In fact when the polar region became colder, the dinosaur emigrated in other areas.
Secondly, the reading suggests that position of the dinosaur legs indicate that they are endotherm. She elaborates on this mentioning that all the modern endotherm mammals have the legs placed under the body. Furthermore this position allow them to run. This points is challenged by the lecturer. She suggest that position of the dinosaur legs support their big weight and give them the possibility to become bigger.
Finally, the author states that bone structure of the dinosaur contain Harvesian canals, which permits them to growth rapidly. The article establishes that they are big as all the other endotherm animals.The lecturer, on the other hand, posits that the cold weather stopped many times the growht of the dinosaur. She puts forth the idea that if they were a endotherm animals, their temperature must keep constant and not only enhance with the warm weather.