1) To say that environmental science is mission oriented means it is A) a highly organized endeavor. B) essentially an information gathering endeavor. C) oriented toward solving problems. D) designed to understand relationships. 2) If everyone in the world lived a lifestyle similar to the average U.S. citizen we would need ________ more planets to support everyone. A) two B) four C) six D) eight 3) About ________ of the world's people currently lack access to clean water, adequate diet, basic sanitation, and other essential needs. A) 100 million B) 300 million C) 700 million D) 1.4 billion 4) Sustainable development means A) improving people's lives in the present in a way that can continue far into the future. B) providing ever-increasing amounts of adequate housing. C) continued growth indefinitely as long as it can be paid off. D) utilizing an ever-increasing quantity of natural resources.