▶ Your Answer :
The reading passage contends that there are several possible theories to explain why Kerala, the state of India, experienced red rain. On the other hand, the lecturer brings up several points that contradict this argument. The lecturer points that these explanations are problematic. First of all, the lecturer points out that the theory that red rain came from the blood of bats is far-fetched. This is due to the fact that it is impossible that almost five million of migrating bats were destroyed by thunderstorm or meteor burst. If this had caused red rain, a large amount of bats’ wings and bonds would also have been found with their blood. This contradicts the reading passage’s claim that red rain derived from bat blood dispersed though the atmosphere. Moreover, the point made in the lecture is that Mount Mayon’s eruption was irresponsible for red rain in Kerala. If massive clouds that include acidic dust from a volcanic eruption in the Philippines had been carried toward Kerala by the winds, the Philippines would also have experience red rain. In addition, some of the countries between the Philippines and India such as Vietnam and Thailand did not experience this rare weather phenomenon. This refutes the author of the reading passage that a volcanic eruption in the Philippines results in the red rain. Last but not least, the lecturer maintains that there is hard to explain that local factories and plants’ pollutants combined with moisture in the atmosphere cause the red rain. There is few factories in Kerala so the red rain could not be generated by chemicals resulted from factories. Besides, this reddish-brown rain was not detected in cities that had plenty of plants that had responsibility for industrial chemicals. This is different from the point in the reading passage that pollutant from the local factories are the cause of the red rain in Karela. |