The United state native animals and plants are on the verge of extinsion as result of strange and frightening species brought to U.S,despite the good discovered from them, there adverse effect are increasing.
The resaerch institute and different bodies in U.S came up with many report on damage done by foriegn species to U.S wild life .Rigth from ostrea lurida oysters troubled by green crabs and Europeans,to micro-nesian kingfisher which hardly found in US wild life again sequel to threatening by snake from Papua New Guinea and Austrailia.
As a of damage in U.S fish and wildlife worth billion of dollars in a year,white house order the federal agencies to alivate this situation.