Environmental Science Ch. 1-2 Test

Environmental Science Ch. 1-2 Test - Environmental Science...

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Environmental Science Ch. 1-2 Test Ch. 1 Ecological footprint : the amount of resources required by a person. (Can be measured in hectares) Hectares: It is a calculation, which includes the land needed to supply the person with food, housing, etc. (Short answer) - Typical American 5.1 hectares (12.6 acres) - Typical Indian .4 hectares (1 acre) - 12.6 acres times the population is about 1.5 times as big as the U.S. land mass. The world would not be about to support everyone on the earth if we all lived like us. World population : 6.4 billion Estimated world population in 2050 : 8.9 billion PAGE : Pilot analysis of Global Ecosystem suggests that in many areas of the world we are using up more resources faster than the earth or man are producing them. MEA : Millennium Ecosystem Assessment the goal is to halt ecosystem decline, to promote restoration and wise management of ecosystems. Green house effect : The increase of CO 2 concentrations is affecting the global temperature. Kyoto protocol : 166 nations agreed to reduce CO 2 emissions below 1990 levels. It was never ratified. Loss of biodiversity : (The number of species and the amount of genetic variation within the species.) This means loss of habitat, which causes extinction. Extinct species : No one knows how many species have been lost. We know of 1.75 million species . There may be as many as 13 million species. Lack of biodiversity makes it theoretically more difficult for populations to recover when stresses are put in populations. (Short answer) Essay: List and explain the three strategic themes. A. Sustainability : a system or process is sustainable if it can be continued indefinitely without depleting any of the material or energy resources required to keep it running. 1. developed world has stable populations but uses increasingly more resources. 2. Developing world has rapidly growing populations and increasing demands for resources. - The ideal is to have development so that humans can live better and at the same time use resources at
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a rate they can be replaced so there will be no interruption of supply. B. Stewardship : the faithful caring for something on behalf of someone else. We are caring for the world so future generations will have it for their lives. C. Sound science : scientific community and peer review. There are scientists that collect data and give conclusions. All of this research is published and other professionals review the work to judge it as to scientific accuracy. Environmental Justice : the equal distribution of resources. Environmental racism : Where toxic waste sites are placed in minority towns because they do not have the knowledge to power to stop it. Peer review
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Environmental Science Ch. 1-2 Test - Environmental Science...

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