Which of the following has contributed the most to the increase of invasive species in Europe? A. air pollution that has destroyed native plants B. desalination, which has killed native plants C. an increase in trade across the continent D. the lack of invasive species legislation in Europe Please select the best answer from the choices provided. A B C D

Which statement best describes a significant cause of world war ii? o a. the economic boom that followed world war i allowed countries to build up huge militaries. o b. the treaty of versailles, which ended world war i, left lasting resentments in many countries. o c. the rise of imperial states in asia caused european powers to unite for their common defense. o d. the league of nations encouraged european states to form secret military alliances.