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The Number of Non-Native Species in the US
11:37 - 12:57 (01:20)
In 1999, a study found that there were 50,000 non-native species in the US, of which 4,300 were considered invasive, such as the Burmese python in Florida.
In 1999, a study found that there were 50,000 non-native species in the US, of which 4,300 were considered invasive, such as the Burmese python in Florida.