EESA01H3 Chapter : EESA textbook.docx
18 Sep 2013
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2 environmental science explores interactions between humans and the physical and biological worlds; environmental science is the study of how the natural word works, how our environment affects us, and how we affect our environment. Stock is the harvestable portion of the resource. Nonrenewable natural resources: are in finite supply and depletable. 4 human population growth has shaped our resources use. 2. 5million in old stone age; agriculture revolution (10000-12000); industrial revolution (mid-1700s) ; today: medical-technological revolution. 5 resources consumption exerts social and environmental impacts impact= population*affluence(level of consumption)*technology ipat . Carrying capacity is a measure of the ability of a system to support life. Tragedy of the commons: each individual withdraws whatever benefits are available from the common property as quickly as possible, until the resource becomes overused and depleted. (6)calculating our ecological footprint. Ecological footprint is a tool that can be used to express the environmental impact of an individual or a population.
