Question

[CM.06]Scientists have done experiments to show that there has been a rapid increase in global temperatures over the years. Based on these experiments, which of these tables
best shows the atmospheric methane level from 1600 to 2000?
Year
1600
740
1700
750
1800
770
1900
830
2000
900
Methane level (in parts per billion)
Year
1600
900
1700
750
1800
770
1900
830
2000
740
Methane level (in parts per billion)
Year
1700
770
1600
750
2000
740
1900
830
1800
900
Methane level (in parts per billion)
Year
2000
830
1900
750
1800
770
1700
740
1600
900
Methane level (in parts per billion)

Answer 1

As shown in the graph below, methane concentrations have been increasing steadily since 1600, and even as the time value approaches 2000, the growth is of exponential magnitude.

As just a result, the first choice is right, as the concentration in 1600, 1700, 1800, 1900, and 2000 is 740, 750, 770, 830, and 900 parts per billion, respectively.

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