According to Alex Steffen, how do we build more sustainable communities? A) We need to keep the population density of our communities the same. B) We need to decrease the population density of our communities. C) We need to increase the population density of our communities. Question 5 (1 point) What are Jane Goodall's reasons for hope? A) The human spirit, the power of youth, the United Nations and hybrid cars. B) The indomitable human spirit, the power of youth, the human brain and nature's resilience. C) Achieving peace, the resilience of nature, chimpanzees tool use and traveling