11.   One problem facing the administration is that international trade rules can defeat import barriers imposed to control invasive species.

12.   Rep. LaTourette announced the signing of his measure to keep invasive species out of the Great Lakes and also highlighted a number of other legislative successes.

13.   The aggressively invasive species, first introduced in the United States as an aquarium plant, also has been spotted in irrigation canals and lakes in the Brownsville area.

14.   The red-eared slider turtle is banned in the European Union and South Africa as an invasive species.

15.   The researchers, who published their work in the journal Biological Conservation, point out that deoxygenation would probably not kill all potentially invasive species.

16.   The show weighs in especially effectively on the threat posed by invasive species.

17.   They say a requirement might not fully solve the invasive species problem because the pumps cannot remove all of the water and sediments from the bottom of ballast tanks.

18.   This will make it easier to measure the impacts of invasive species or human activities, he added.

19.   To anyone familiar with the ravages of invasive species worldwide, the danger is obvious.

20.   Widely distributed invasive species like the catfish and carp ate the scarce, isolated natives and competed with them for food and spawning habitat.