The steepest stable slope that an unconsolidated material can maintain is the material's
A. shear strength.
B. angle of repose.
C. scarp.
D. cohesion.
Answer: B
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As of 2014, the Superfund cleanup program has resulted in
A) fewer than 10 sites receiving all the necessary cleanup. B) only about 100 sites receiving all the necessary cleanup. C) more than a thousand sites receiving all the necessary cleanup. D) the necessary cleanup of more than 99% of all Superfund sites.
In the diagram, there is
A) higher overall energy levels, with a decrease of water vapor in the air.
B) lower overall energy levels, with an increase of water vapor in the air.
C) an equilibrium between condensation and evaporation.
D) lower overall energy levels, with a decrease of water vapor in the air.
A permeable layer that transports water is called a(n) ____________________
Fill in the blank(s) with correct word
Pollutants that are aerosols consist of
A. gases, liquids, and solids. B. gases and solids. C. liquids and solids. D. gases and liquids.