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Practice Speaking: Read Aloud
ID: #51914
Long Conservation Scientists
Conservation scientists have long tried to map how much of planet remains undegraded by human activity. Previous estimates using satellite imagery or raw demographic data found anywhere from 20 to 40percent of globe was free from obvious human incursions, such as roads, light pollution or gaping scars of deforestation. But intact forest canopy can hide an emptied-out ecosystem below.
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