▶ Your Answer :
In this set of materials, both the lecturer and the writer deal with the cause of whale stranding. Regarding this issue, the lecturer refutes the writer’s claims one by one.
To begin with, the lecturer contradicts the first idea of the reading passage that noise pollution may be the cause that whales beach themselves. The lecturer points out that according to the earliest record, there had been whale stranding before there was the sound of oil rigs and modern ships. So, this problem preceded the sound of oil rigs and modern ships. Also, the lecturer mentions that whale stranding is more likely influenced by rough weather or weakness rather than noise pollution. Therefore, the lecturer claims that the first idea of the reading passage cannot be validated.
On top of that, the lecturer cast doubts on the writer’s second idea that when whales come ashore when they follow other stranded whales since whales travel in groups. The lecturer explains that some whales are found in different beaches. To be specific, all whales do not strand themselves. Thus, the lecturer asserts that the writer’s claim is also disputable.
Finally, the lecturer runs counter to the writer’s last idea that changes in the earth’s magnetic field lead to whale stranding. The lecturer mentions that if whales use magnetism as a navigational device, they will not override other senses since a magnetic impulse is so strong that whales use it for navigation. Hence, the lecturer goes on to say that the writer’s last idea does not sound convincing. |