▶ Your Answer :
Although the author of the reading passage argues that cold-blooded dinosaurs could have survived in the Polar Regions, the professor brings up several points to contradict this argument.
Firstly, the speaker says that the dinosaurs which surviving in the extremely cold area is more likely to be the warm-blooded. This is because in the past, the continent was constituted of small islands, meaning there were no paths to move to far regions. Additionally, it is not plausible for the young dinosaurs to survive during the long journey. This contradicts the author’s assertion that cold-blooded dinosaurs could have moved to other regions during the colder months.
Secondly, the lecturer contends that the argument related to hibernation has some flaws. If dinosaurs had hibernated during the colder months, there should be LAGs indicating their growing and hibernation. However, many species do not have these lines, meaning that they were active during the cold seasons. This contradicts the reading passage’s assertion that the dinosaurs increase survivability through hibernation when the temperature drops seriously.
The final point made by the professor is that dinosaurs with highly improved vision are the warm blooded, rather the cold-blooded. Cold-blooded species should have got their body heat from the sun. However, the eye socket means that there was a long dark period, and this period made it hard for the cold-blooded to survive without the sun. This goes against the writer’s claim that the cold-blooded dinosaurs with the advanced eye vision could have adapted to the extremely cold area. |