A renewable source of energy is _________ .

A renewable source of energy is _________ .
 
  a. solar
  b. coal
  c. oil
  d. natural gas

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Which of the following does NOT contribute to environmental degradation?
 
  a. Water shortages
  b. Shifts from a meat-based diet to a primarily vegetarian diet
  c. Soil erosion
  d. Deforestation

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Deforestation is most occurring in which countries?
 
  a. The Amazon, West Africa, and Southeast Asia
  b. Bali, Australia, and Southeast Asia
  c. Central America and South America
  d. Sub-Saharan Africa and South Africa

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The claiming of common properties by states or private interests for their own use is known as the
 
  a. tragedy of the commons.
  b. enclosure movement.
  c. greenhouse effect.
  d. comodification of the environment.

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According to the United Nations, approximately how many plant and animal species become extinct every year?
 
  a. 5
  b. 50
  c. 5,000
  d. 50,000