With increasing distance from an oceanic ridge,
A. the rocks become younger.
B. the rocks become older.
C. the rocks' ages alternate between younger and older.
D. All of the choices; different patterns occur at different ridges.
Answer: B
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Dipole-induced dipole forces of attraction exist between water and gasoline, and yet, these two substances do not mix because water has such a strong attraction for itself. Which of the following compounds might best help to make these two substances mix into a single liquid phase?
A. the molecule in the middle because when the salts mix into the water, it will help separate the water and decrease the attraction for itself B. the molecule on the far left because the O-H bond is polar, and the carbon and hydrogen bonds are nonpolar C. The molecule on the right will form attractions with the polar ends of the water, allowing the gasoline a chance to mix with the water. D. All of these molecules would be equally effective at increasing the mixing of gasoline and water.
The San Joaquin Valley experienced a phenomenon called ________ due to excessive groundwater pumping
A) acid mine drainage B) evapotranspiration C) water table rise D) land subsidence
What is produced by the reduction of pyruvate in the body under anaerobic conditions?
A) acetate B) acetyl CoA C) lactate D) pyruvate
A conjugated protein must contain which of the following?
A) a metal ion B) a polysaccharide C) a non-amino acid portion D) all of these