▶ Your Answer :
In the given set of materials, there are some discrepancies between the viewpoints of the lecturer and the author on the issue of decreasing phenomenon of birds and its reasons in the United States. The lecturer affirms indeed, the continued growth of human population and related consequences such as using of pesticide or agriculture impacts are not significantly harmful for birds, whereas the author suggests otherwise.
To begin with, the lecturer debunks the author's first conjecture. To elaborate in detail, the lecturer states that bigger and larger urban areas they have, more species of birds like pigeons are increasing. This is because these birds are easy to live urban habitats, even though some species possibly leave their habitat by the negative effects of human population, but this is not meant that there are uniform declining of birds in whole area. This casts doubt on the reading passage's assertion that consequences of human activities are the reasons of bird's disappearing.
On top of that, the speaker also indicates dissent over the reading passage's idea on agricultural activities. The lecturer sounds convinced that the author is making a manifest error since there are less and less agricultural crops and farms in the United states, so that there may have no giant impacts on them as soon as. Furthermore, introduction of new crops will help birds to easily approach their foods and water. However, the author clarifies that growing agrarian events can harmful for birds like destruction of bird habitats and wilderness.
Third, the lecturer goes on to expound that the author's final point on passive effects of insecticide is flawed. To corroborate this opinion, the lecturer mentions that because of the new technology invented, its new and less harmful composition of pesticide will play more positive role on environment of birds. This counters the reading passage's argument that the use of chemical pesticides will harm birds.
With the three convincing ideas that the lecturer posits, the assumptions made by the reading passage are all rendered groundless.
Good (27–30)
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