This figure has rock units and geologic features that are assigned letters that are not in any particular order. From the geologic relations, what is the oldest unit?
A. conglomerate (unit C)
B. granite (unit G)
C. limestone in the far right (unit K)
D. lava flow (unit L)
E. dike (unit D)
Answer: B
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The left half of the diagram below represents the component of photosynthesis that
A) occurs only in plants that have relatively large chloroplasts.
B) occurs only in plants that have relatively small chloroplasts.
C) can happen whether sunlight is present or not.
D) requires the presence of sunlight.
Concurrent range zones are used in fossil correlation because most fossils:a
have long geologic ranges. b. are very rare. c. are geographically restricted. d. are not common. e. are not well preserved.
Currents tend to move in large ____ patterns in the Northern Hemisphere
A) irregular B) counterclockwise C) clockwise D) random
Hazardous wastes are characterized by being mainly ________
A) dangerously radioactive B) composed of hazardous heavy metals C) composed of non-degradable materials D) corrosive, flammable, and explosive E) wastes that are not able to undergo bioremediation