; (9) supporting native plant communities within or adjacent to agricultural areas provides important wildlife habitat that would not otherwise be available; (10) the use of native plants in landscaping can reduce the need for herbicides and water use; and (11) of the 20,000 known native plant species in North America, it has been estimated that nearly 25 to 30 percent are at risk of extinction as a result of factors such as habitat loss, invasive species, temperature shifts, and pesticide use. 3. Definitions In this Act: (1) Control The term control means, with respect to invasive species, containing, suppressing, or reducing populations of invasive species. (2) Eradicate The term eradicate means, with respect to invasive species, removing or destroying an entire population of invasive species. (3) Invasive species The term invasive species means, with respect to a particular ecosystem, a nonnative organism, the introduction of which causes or is likely to cause economic or environmental harm or harm to human, animal, or plant health. (4) Locally adapted The term locally adapted means, with respect to plants, plants that— (A) originate from an area that is geographically proximate to a planting area