Rocks above and below an unconformity are related
a. True
b. False
False
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Guano is significant because
A) it is a major source of phosphorus. B) its presence is considered a sign of an imminent volcanic eruption. C) it is a major part of the global sulfur cycle. D) it is a sign of a pioneer community.
Consider a certain carboxylic acid at physiological pH of about 7.4. Assume the following general reaction. HA(aq) + H2O(l) ? H3O+(aq) + A-(aq) What will happen to the ratio of the deprotonated to protonated form, respectively, if the pH of the solution drops to 6.2?
A) It will decrease. B) It will increase. C) It will remain constant. D) It will decrease then increase since it is a buffer.
Quartz has a characteristic conchoidal fracture, yet rock shops often sell quartz as elongate six sided objects with a pointed termination. What causes this shape?
A) The planar faces that form the object are crystal faces that grow when the crystals grew into a void. B) Quartz usually is amorphous, consistent with its conchoidal fracture, but when it grows it grows against minerals with planar faces, causing this shape. C) You should never buy a crystal like this because it is clearly fake, only artificial crystals grow this way. D) The rock shop cuts them that way with abrasives. The facets are cut to give the crystals more "power" for the crystal people.
A nationality is
A) a group of people tied to a place through legal status and tradition. B) a country. C) an ethnic identity. D) any cohesive group of people. E) any group with shared religion, language, and origin of birth.