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Rates of Human Induced Warming

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The graph below shows how temperature has varied with time. The grey line shows monthly temperatures and the orange line shows an estimate of the contribution of human-induced warming to those temperatures over the same period.

GRAPHING RISING TEMPERATURES

a) Describe the difference between the lines showing monthly temperatures and human-
induced warming.
[2 marks]

b) In what year did human-induced warming reach 0.5K (°C)?
[1 mark]

c) Use the graph to estimate the rate of change of human-induced warming in the year
1970.
[3 marks]

d) Use the graph to estimate the rate of change of human-induced warming in the year
2000.
[3 marks]

e) What does the difference between the rate in 1970 and the rate in 2000 tell us about
how human-induced warming is changing?
[1 mark]

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