Which of Ullman's three essential conditions for spatial interaction is most likely to be an influence upon migrants who are more influenced by push factors to leave an origin than the pull factors of a destination?

A. intervening opportunity
B. complementarity
C. transferability
D. none of these


Answer: A

Environmental & Atmospheric Sciences

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In regard to sea surface temperature (SST), as one travels toward the poles SST

A. decreases. B. increases. C. remains constant. D. decreases and then increases.

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If British Petroleum (BP) had applied the precautionary principle to its operations at the Deep Horizon oil-drilling rig, it could have saved many millions of dollars on cleanup and compensation.

Answer the following statement true (T) or false (F)

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A tsunami can occur as a series of waves following at regular intervals. What is the typical interval between crests?

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