Why Are Some Human Actions Not Sustainable?

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Presentation transcript:

Why Are Some Human Actions Not Sustainable? Ch 1 – KI 4

Sustainability and Resources Geographers observe two major misuses of resources: Humans deplete nonrenewable resources. Coal, Petroleum, Natural Gas Humans destroyed otherwise renewable. Timber on Easter Island A resource is a substance and the environment that is useful to people, economically and technologically feasible to access, and socially acceptable to use. Sustainability the use of Earth’s renewable and nonrenewable natural resources in ways that ensure resource availability in the future.

Three Pillars of Sustainability Environment Pillar Sustainable development can only exist if conservation is embraced more fully than wasting resources or preservation of all resources Economy Pillar Efforts to set prices of commodities and goods based not only on supply and demand but also on costs to the environment. Society Pillar Modifying the wants of cultures in regards to shelter, food, and clothing to objects that are sustainable

Earth’s Physical Systems Geographers classify natural resources as part of four interrelated systems. Abiotic system is one composed of nonliving or inorganic matter. Atmosphere: thin layer of gas surrounding Earth Hydrosphere: all water on and near Earth’s surface Lithosphere: Earth’s crust and layer just below the crust Biotic system is one composed of living organisms. Biosphere: all living organisms on Earth

Interactions in the Biosphere People are now the most important agents of change on Earth. Human modification of the abiotic systems has ongoing ramifications. Examples Atmosphere contains pollutants, humans have trouble breathing. Without water, humans waste away and die. Excessive extraction of resources from lithosphere limits availability of materials for building and fuel for energy. Excessive erosion or depletion of nutrients limits biosphere’s ability to provide food for humans.

Free Response Question (FRQ) Transferring the locations on Earth’s surface is called projection. The problem with projecting a round sphere to a flat plane is that it causes distortion. A. Describe the 4 types of distortion (4) B. For each type of distortion explain which type of map projection you would use to minimize the distortion. (4)