Edmontosars Coming Home

The reading claims that the elephant-sized edmontosaurs have been survived in the winter by migrating to the warm south territories. However, the lecturer finds all ideas dubious, and refute them all.
First, the author argues that edmontosaurs must have migrated for at least part of the year to the hospitable warm areas in order to find food in that in the winter harsh cold of the arctic region prevents plants to grow; in fact, there might have been shortage of food. Conversely, the lecturer brings up the fact that in the summer the sun radiates for twenty four hours a day that provides hospitable situation for plants growth; abundance of such growth of plants in the summer could have been compensated the lack of plants growth in the winter, and provide enough food for their winter too. …show more content…
In contrast, the professor underlines the fact that there are many other reasons that lead animals to live in herds, such as extra protection. He also exemplifies by mentioning the Roosevelt elk which lives in the herds, but does not migrate.
Finally, the reading asserts that edmontosaurs were capable of migrating long distances and could run really fast; as a result, there is not any reason that they did not migrate in the winter. On the contrary, the speaker dismissed this issue due to the fact that the herds comprise both adult and juvenile edmontosaurs which were not capable of migrating long distances, so the herd could not have left them behind due to the fact that they could not survive on their own. As a result, the herd had to stay in one place and manage their life without any