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Geography

How Do Invasive Species Alter Native Ecosystems Geographically?

Quick fact

The brown tree snake, introduced to Guam, wiped out 10 of the island's 12 native forest bird species and altered the forest structure by removing seed-dispersing birds, causing a cascade of geographic changes.

Why this is interesting

A single plant, accidentally carried across an ocean, can within decades turn a lush forest into a uniform green desert. How does one species spread so far and change the very map of life?

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How Do Invasive Species Alter Native Ecosystems Geographically?

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