THIS PASSAGE SUGGESTS THAT THE SUCCESSFUL EXPLORATION OF THE OCEA...

20. This passage suggests that the successful exploration of the ocean depends upon _______. A. radios that divers use to communicate B. controlling currents and the weatherC. vehicles as well as divers D. the limitations of diving equipmentIII. Read the following passage and mark the letter A, B, C, or D to indicate the correct word for each of the blanksNearly 200 of the 1500 native plant species in Hawaii are at risk of going extinct in the near future because they havebeen (21) _______ to such low numbers. Approximately 90 percent of Hawaii's plants are found nowhere else in the worldbut they are (22) _______ by alien invasive species such as feral goats, pigs, rodents and (23) _______ plants.The Hawaii Rare Plant Restoration Group is striving to (24) _______ the extinction of the 182 rare Hawaiian plants withfewer than 50 individuals remaining in the (25) _______ . Since 1990, (26) _______ a result of their "Plant ExtinctionPrevention Program", sixteen species have been brought into (27) _______ and three species have been reintroduced.Invasive weeds have been removed in key areas and fencing put up in order to (28) _______ plants in the wild.In the future the Hawaii Rare Plant Restoration Program aims (29) _______ collecting genetic material from theremaining plants in the wild for storage as a safety net for the future. They also aim to manage wild populations andwhere possible reintroduce species into (30) _______ .