What is an invasive species?
An invasive species is an organism, usually non-native, that threatens the biodiversity of an ecosystem. In other words, an invasive is a species that has the ability to take over an area and decrease the variety of other species. Invasive species can be animals, plants, or fungi but this site will focus only on the invasive plants in Concord. Invasives can cause more than problems with biodiversity. Many invasives change the quality of the soil, can be harmful for native animals, and even interfere with public works.

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1. What is an invasive species?
2. What problems do invasive species pose?
3. What are the advantages of native species?