▶ Topic : In the given set of information, both the reading passage and the lecture deal with Caroline bays, the eastern seaboard of United States with unique features. The lecturer casts doubt on the reading passage's claim on possible evidence that meteorites impacted the creation of Caroline bays, by presenting counterarguments.
First, the reading passage claims that the distinctive oval shape formation is an indication of meteorites striking the Earth. However, the lecturer argues that this claim is disputable. This is because the craters of meteorite is always circle due scattered release of energy, and not oval.
Second, according to the reading passage, magnetic activity, commonly found at craters formed by meteorites, were detected close to many of the bays. However, the lecturer claims this evidence is controversial. To be specific, old technology used to detect magnetic activity has malfunctioning and innacurracies, making the collected evidence questionable.
Lastly, the lecturer disagrees on the reading passage's claim that the discovery of nanodiamonds, abundent particles in meteorites, indicates that the bays were created by meteorites. He claims that nanodiamonds are common ingredients found in rain and fire, not just in meterites. |