Environment: understanding atmospheric and ocean flows: Figure 11 (repeated) (a) Global lead production; (b) the concentration of lead in a Greenland ice core (years before present or ‘BP’) (adapted from Hong et al., 1994)

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Environment: understanding atmospheric and ocean flows

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Figure 11 (repeated) (a) Global lead production; (b) the concentration of lead in a Greenland ice core (years before present or ‘BP’) (adapted from Hong et al., 1994)

3.1.2 Interpreting a graph

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