Which of the following topological relationships describe the arc-node relationship in the coverage model?
A. area definition
B. connectivity
C. contiguity
Answer: B
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Continental crust ____
A)is much thinner under mountain ranges than it is in the adjacent areas B)is much thicker than average beneath the Rift Valleys of Africa C)is usually described as "granitic" D)consists of gabbro and basalt E)is thinner than oceanic crust
A bar in a river channel is a ridge of sediment, usually sand and gravel, deposited in the middle or along the banks of a stream.
Answer the following statement true (T) or false (F)
Which of the following was not a consequence of the early heating of the earth?
A. formation of an atmosphere B. release of abundant, free oxygen into the atmosphere C. internal differentiation, forming a core, mantle and crust D. formation of the oceans
Which of the following is FALSE regarding CITES?
A. It was formed in 1975. B. When implemented properly it has provided foolproof protections of endangered species. C. It lists more than 700 species as threatened with extinction. D. It is an international organization. E. All of these are true.