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| Figure 17: Global land-cover estimates of percentage tree cover, herbaceous cover, and bare ground. Global land-cover estimates of percentage tree cover, herbaceous cover, and bare ground within each 500-m by 500-m grid cell, derived from data acquired in 2001 by the Moderate-Resolution Imaging Spectroradiometer (MODIS) sensor onboard the Terra satellite platform. Credit: R. DeFries, M. Hansen, and J. Townshend, University of Maryland-College Park. |

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