Will a soil comprised of a combination of sand 90 percent, silt 5 percent, and clay 5 percent tend to have high or low porosity?
Using Figure 27-1, the standard soil texture triangle, answer the question.
What will be an ideal response?
High
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A change in the genetic composition of an individual in a population is known as
A. emigration. B. mutation. C. natural selection. D. biological evolution. E. genetic drift.
Which of the following ranks the velocity of seismic waves in correct order from highest to lowest?
a. surface waves, S waves, P waves b. S waves, surface waves, P waves c. P waves, surface waves, S waves d. P waves, S waves, surface waves
Water particle orbits for a shallow water wave are ________.
A. circular and extend to the seafloor B. circular and extend halfway to the seafloor C. elliptic and enlarge with depth D. circular at the surface and elliptical at the sea floor E. elliptic and flatten with depth
The integration of Middle East and North African states into the global economy generated all of the following results, except:
A) internal migration to rural areas B) cuts to social programs C) lowered living standards D) international aid money E) none of the above