This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Giant salvinia. Giant salvinia from ars usda gov Giant salvinia thumbnail Image Number Giant salvinia is fastgrowing fern that can clog ponds and lakes Forming mats up to feet thick the plant gobbles up oxygen and blocks sunlight needed by other water dwellers tiny weevil Cyrtobagous salviniae is under study as biocontrol for