4. Which quotation from the article best explains the ongoing care necessary for the protection of Antarctica? Scientists and regulators are evaluating the impact such permanent facilities as visitor centers, museums and hotels would have on the environment. (paragraph 7) These scientists conduct research on a range of subjects, including ecosystems,weather patterns, and the effects of pollution. (paragraph 1) c. O Since 1959, more countries have joined the agreement and its objectives have been expanded.(paragraph 4) ) Some of those territories overlapped, and some countries would not recognize the claims made by other nations. (paragraph 2)