If both statements are true, mark "a" on answer sheet. if either statement is false, mark "b" on answer sheet. * if both statements are false, mark "c" on answer sheet. chapter1 la. when we speak of protecting the environment, we are referring to all living and non-living things 1b. solar energy would best be categorized as a perpetual resource. 2a. the tragedy of the commons refers to overuse of shared common resources 2b. an overarching model that guides interpretation of events would be called a paradignm 3a. point sources of pollution include runoff of fertilizers and pesticides from farmlands and suburban lawns. 3b. developed countries have low level of industrialization and low per capita income. 4a. sustainable yield is the highest rate that a renewable resource can be used indefinitely without reducing its available supply 4b. a major factor contributing to the degradation of natural capital associated with the pricing of consumable goods is they are priced in such a way that even those in poverty in developing nations can acquire them sa. the stewardship worldview states that we can and should manage the earth for our own benefit but that we also have an ethical responsibility to be caring stewards. 5b. the united states has the world's lowest per capita ecological footprint 6a. perpetual resources exist in finite quantities in earth. 6b. the three principles of sustainability are chemical cycling, reliance on solar enersv. and biodiversity 7a. a resource, such as wind, is considered a renewable resource. 7b. sustainability is the ability of the earth's various natural systems and human cultural systems and economies to survive and adapt to changing environmental conditions indefinitely. 8a. an ecological tipping point is an irreversible shift in the behavior of a natural system. 8b. resources are materials and energy in nature that are essential or useful to humans. and human economies. 9b. the ipat model of environmental impact takes into consideration population size, technology 9a. natural services are functions of nature, such as purification of air and water, that support life and affluence 10a. the goals of environmental science are learn how nature works, understand how we interact with the 10b. planetary management is a social movement dedicated to the protection of the earth's natural capital. environment, live more sustainably, and find ways to deal with environmental problems.