How do sand dunes migrate? What will be an ideal response?
Sand dunes migrate by the saltation of sand on a dune's windward side and collapse of the leeward
slope.
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Limestone structures constructed in the marine environment by skeletal material of living
organisms:a. evaporites d. ophiolites b. clastic wedges e. organic reefs c. mobile belts
The refractive index of seawater:
A) is greater than freshwater. B) is less than freshwater. C) is equal to freshwater. D) decreases with increasing salinity.
Which of the following surface environments is the most likely site for deposits in this photograph?
A. beach B. sand dunes C. steep mountain front D. lake E. river channel
The 2011 EPA standards for mercury and air toxics will reduce pollutants dramatically from
A) nuclear power plants. B) oil and coal-fired power plants. C) paper mills and CAFOs. D) electric hybrid cars.