tpo 29 edmontosaurus migrated to south during the winter

The material discusses how did edmontosaurus survive in the North Slope during the winter. Whereas, the reading suggests that they immigrated south, where the weather was warmer, the listening challenges this and states that the hypothesis that edmontosaurus migrated south to survive during the winter are unconvincing. First, the author mentions that edmontosaurus fed merely on plants, so they had to migrate to find food in winter. On the other hand, the professor opposes this and posits that edmontosaurus did not have to immigrate to survive. The lecturer explains that a hundred years ago, the weather at the North Slope was warmer than today. Furthermore, in the arctic region, the sun shined twenty-four hours at the peak of the summer, which created a good growing condition for plants. According to the lecture, these vegetations died in winter, but edmontosaurus could easily live on these die plants during the winter. Second, the writer contends that edmontosaurus lived in herds, which supported their migration. On the contrary, the professor refutes this and cits that living in herds did not mean that edmontosaurus migrated. The lecturer points out that animals could live in herds for other purposes, such as extra protection against predators. The speaker says that other animals such as Roseville elk live in herds, but they do not migrate. Third, the reading states that edmontosaurus were physically able to migrate. Conversely, the professor contradicts this and brings up that adults edmontosaurus had the ability to migrate; however, juvenile ones were not capable to travel a long distance. Moreover, the lecturer adds that if young edmontosaurus migrated with herds, they could slow herds down. The speaker says that adults edmontosaurus could not leave their youngs alone, because they could not live on their own. The professor concludes that adults stayed with their youngs and survived on the North Slope.