NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
Global use of plant resources. Map showing the proportions of local plant resources used by local populations worldwide in 2005. Areas where the population uses ten times more plants than are grown locally are red. Yellow areas are where most of the vegetation is used, green areas produce more vegetation than the local population needs and in grey areas less than ten per cent of the local vegetation is used by the population.
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