Passage I
Earth's climate is affected by the total solar irradiance (TSI), the rate at which energy from solar radiation is received by Earth per unit area of the surface. In 2000, sunspot records were used to estimate the TSI at a particular Indian Ocean location over the past 1,100 years. Ocean floor sediment that had been deposited at the location over that same period was analyzed for carbon (C), nitrogen (N), and aluminum (Al). The percents by mass of C, N, and Al, respectively, indicated the intensity of monsoons, ocean productivity, and rate of continental erosion (3 measures of climate) over the period. The results are shown in the figure.
2. The figure indicates that the greatest increase in percent by mass of N at the Indian Ocean location occurred over which of the following 100-year periods?
Your Answer is
Correct Answer is J
Explanation
Looking at the change curve of N content in the third small picture, it can be seen that the fastest growth occurred in 1700-1800