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 or feature of those listed below?
A. dike (unit D)
B. old river channels (feature R)
C. fault (feature F)
D. lava flow (unit L)
E. the canyon (feature N)
Answer: C
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A) ecological footprint B) fertility rate C) biocapacity D) age-structure E) ecosystem function
Most cropping systems in the U.S. rely on corn because it is the crop with the highest value
Indicate whether the statement is true or false
Dunes along the coast ____
a. are not conducive to wildlife habitats b. are easily eroded by water c. protect inland areas from storm waves d. are covered with vegetation