The lecture has effectively challenged the passage on the topic of the cause of the decline of the sea otter along the western coast of North America from California to Alaska, demonstrating that the most likely reason is the predator.
First of all, disagreeing with the assumption from the passage that water sample revealing increased levels of chemicals can prove the pollution causes the otters’ death, the lecturer brings forward her evidence that the pollution threat is already weakened on the beaches where otters exist. And no one can found dead otters on the beach, which would not happen if they were died of pollution. From this point the lecture questions the content from the passage.
What’s more, according to the professor, due to the human hunt, the food of sea mammals declined, which made them to switch to another diet. Those who can not adopt the change died. Such a theory has argued against the validity of reading material that the fact
other sea mammals decreased too pointed to environmental pollution due to its effect on the entire the ecosystem. It can be viewed as another item of contradictory evidence against the reading
In addition, contrary to the information shown in the reading passage that the pollution hypothesis could also explain the uneven pattern of otter decline, the speaker presents the different point of view, stating that in some shallow and rocky locations, predators can not reach because of their huge size, so sea otters will not decline. This is another part where the idea of the passage is totally groundless.
The lecture has effectively challenged the passage on the topic of the cause of the decline of the sea otter along the western coast of North America from California to Alaska, demonstrating that the most likely reason is the predator.
First of all, disagreeing with the assumption from the passage that water sample revealing increased levels of chemicals can prove the pollution causes the otters’ death, the lecturer brings forward her evidence that the pollution threat is already weakened on the beaches where otters exist. And no one can found dead otters on the beach, which would not happen if they were died of pollution. From this point the lecture questions the content from the passage.
What’s more, according to the professor, due to the human hunt, the food of sea mammals declined, which made them to switch to another diet. Those who can not adopt the change died. Such a theory has argued against the validity of reading material that the fact other sea mammals decreased too pointed to environmental pollution due to its effect on the entire the ecosystem. It can be viewed as another item of contradictory evidence against the reading
In addition, contrary to the information shown in the reading passage that the pollution hypothesis could also explain the uneven pattern of otter decline, the speaker presents the different point of view, stating that in some shallow and rocky locations, predators can not reach because of their huge size, so sea otters (there)will not decline. This is another part where the idea of the passage is totally groundless.
写得非常好,与我那又臭又长的文章相比,你的文章强多了,要好好向你学习啊。我一直都很苦恼,怎么样才能用比较精炼的语言来阐述综合写作的要点,看了你的文章,让我茅塞顿开,谢谢了!