Which of these must have happened first? A.Another scientific group researched a similar idea to the one Dow Chemical and the Nature Conservancy proposed and decided that it would not pay off. B.The EPA required companies to rid the air of industrial pollutants, such as nitrogen oxide, emitted by factories. C.Research determined that a 1,000-acre (405-hectare) forest would remove 4 to 7 short tons (3.6 to 6.4 metric tons) of nitrogen oxide annually. D.After reading a notation that suggested that reforestation could improve air quality, Dow Chemical and the Nature Conservancy decided to research how the idea might work.
D.After reading a notation that suggested that reforestation could improve air quality, Dow Chemical and the Nature Conservancy decided to research how the idea might work.
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Apologies for the confusion. Based on the information provided, the correct chronological order would be as follows:
1. After reading a notation that suggested that reforestation could improve air quality, Dow Chemical and the Nature Conservancy decided to research how the idea might work.
2. Another scientific group researched a similar idea to the one Dow Chemical and the Nature Conservancy proposed and decided that it would not pay off.
3. Research determined that a 1,000-acre (405-hectare) forest would remove 4 to 7 short tons (3.6 to 6.4 metric tons) of nitrogen oxide annually.
4. The EPA required companies to rid the air of industrial pollutants, such as nitrogen oxide, emitted by factories.
Therefore, option D must have happened first.
To determine the chronological order of events, we need to analyze the given options and identify any direct or indirect references to time or sequence. Let's break down each statement:
A. Another scientific group researched a similar idea to the one Dow Chemical and the Nature Conservancy proposed and decided that it would not pay off.
B. The EPA required companies to rid the air of industrial pollutants, such as nitrogen oxide, emitted by factories.
C. Research determined that a 1,000-acre forest would remove 4 to 7 short tons of nitrogen oxide annually.
D. After reading a notation that suggested that reforestation could improve air quality, Dow Chemical and the Nature Conservancy decided to research how the idea might work.
The key events mentioned are the research by another scientific group, the EPA's requirements, the research on the forest's capacity to remove nitrogen oxide, and Dow Chemical/Nature Conservancy's decision to research reforestation.
Based on the information provided, we can determine the chronological order as follows:
1. The EPA required companies to rid the air of industrial pollutants, including nitrogen oxide (Statement B).
2. Another scientific group researched a similar idea to the one proposed by Dow Chemical and the Nature Conservancy but concluded it would not pay off (Statement A).
3. Research determined the potential nitrogen oxide removal capacity of a 1,000-acre forest (Statement C).
4. After reading a notation about reforestation's potential to improve air quality, Dow Chemical and the Nature Conservancy decided to research the idea (Statement D).
Therefore, the correct chronological order is:
B. The EPA required companies to rid the air of industrial pollutants, such as nitrogen oxide, emitted by factories.
A. Another scientific group researched a similar idea to the one Dow Chemical and the Nature Conservancy proposed and decided that it would not pay off.
C. Research determined that a 1,000-acre forest would remove 4 to 7 short tons (3.6 to 6.4 metric tons) of nitrogen oxide annually.
D. After reading a notation that suggested that reforestation could improve air quality, Dow Chemical and the Nature Conservancy decided to research how the idea might work.