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Global patterns of biological productivity showing land and ocean vegetation. Land patterns are determined from measurements taken from the NOAA-7 polar orbiting satellite and ocean patterns from the NASA Nimbus-7 satellite. Ocean productivity patterns represent an average over 18 months and range from red (most productive) to purple (least productive). Land patterns represent the potential productivity averaged over 3 years and range from deep green (representing rain forests) to beige (representing deserts and barren regions).