Invasive species are any organism not native to an area and which harms native wildlife habitat, the economy or even human health. Invasive species are primarily spread by people, often by accident. People travel around the world very quickly and often return with uninvited species. In their new homes, invasive species may have few predators, diseases, competitors, or other natural controls. Existing native species may be crowded out, eaten, or killed by introduced diseases.
Invasive species are any organism not native to an area and which harms native wildlife habitat, the economy or even human health. Invasive species are primarily spread by people, often by accident. People travel around the world very quickly and often return with uninvited species. In their new homes, invasive species may have few predators, diseases, competitors, or other natural controls. Existing native species may be crowded out, eaten, or killed by introduced diseases.