People have a long history of spreading the pests from their homelands as they travel abroad.

Unfortunately, invasives wreak havoc on the environments they invade and have pushed numerous native species.

It is critical for people to learn what species are native and what species are invasive. It is also important that people realize that the classification of native and invasive is relative to the locality. There is not a global list of invasive species nor is their a global list of native species. For each species is native to one area and invasive to another.