Many services considered nontradable, even in the late 1990s, are now actively exchanged at long distance.
Answer the following statement true (T) or false (F)
True
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The entire region throughout which a cultural trait prevails is called a
A) core. B) culture area. C) hearth area. D) cultural landscape. E) built environment.
Sound and light waves bend because they travel at different speeds in different media
a. True b. False
Explain how volcanic eruptions contribute to variations in Earth's temperature through geologic time and on historic time frames
What will be an ideal response?
In addition to lowering the pH of nearby streams, which of the following is an environmental problem associated with acid mine drainage?
A. acidic runoff causes aquifer materials to dissolve B. chemical burns of workers due to presence of alkaline minerals C. increased runoff leading to more frequent flooding D. release of heavy metals into the environment E. erosion of mining tunnels causing land subsidence