▶ Your Answer :
In the reading passage, there is ample support for the author's claim that carbon sequestration can solve the global warming. However, in the lecture, the professor gives several reasons as a rebuttal to the author's point. First, the professor contends that supplying iron to the sea can't augment the number of phytoplankton. If the plankton multiply rapidly, they require a lot of nitrogen to survive. Therefore, mass iron will not be able to increase population of the phytoplankton. This casts doubt on the reading passage's claim that replenishing iron to escalate the phytoplankton which can store CO2 by photosynthesis will reduce CO2.
Next, the professor maintains that the artificial wetland is not plausible. One study has shown that an artificial wetland stored CO2 23 percent less than a natural swamp. Moreover, It will take a lot of time to make one artificial wetland. This counters the reading passage's assertion that wetland can prohibit the bacteria in the ground from expelling CO2 to the air.
Finally, the professor argues that the it is unlikely that coal mines can solve the global warming. When CO2 contact with the coal mine, 메테인 is created. 메테인 also can release CO2 when it is burned. Also, Most of the CO2 in the coal mine will not cohere to the coal and just leak to the air. This refutes the reading passage's suggestion that because the coal can fix CO2 to its material, we should store carbon dioxide in the deserted coal mine. |