In the reading, the writer indicates that sulphur dioxide is a detrimental factor that gives damage to environment and human beings. On the other hand, the lecturer claims that current facts about the sulphur dioxide are absurd.
The first point made in the passage is that sulphur dioxide triggers the reduction of visibility. The lecturer, however, refutes this by arguing that sulphur dioxide literally acts against the gases that worsen global warming. It plays a significant role to reflect the sunlight. In addition, managing with the acid rain will aggravate the greenhouse effect.
Another point the reading puts an emphasis on is that acid rain is harmful to not only ecosystem but also humans. In contrast, this is directly rebutted by the lecturer's claim that sulphur dioxide is not the sole reason to engender the acid rain. When a great deal of nitric acid and precipitation combine, they produce acid rain. By just reducing the amount of sulphur dioxide cannot lessen the acid rain since the process of creating the acid rain is complex.
Lastly, the passage says that sulphur dioxide has negative influence on people's health. This point disagrees with the lecture, which contends that sulphur dioxide is not a prime cause of generating cancer. It is the sulphuric acid that harms people when their skins touch it, which is created through oxidation in the air. Besides, long term exposure to it would lead to cancer. |