Which of the following is true of a solid which is hygroscopic?
A) It will gain weight when exposed to a damp environment.
B) It may change its color upon being exposed to a damp environment.
C) both a and b
D) neither a nor b
C
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Heat exchange between a moving air mass and the surface beneath it is at its maximum when the temperatures of the two are equal
Indicate whether the statement is true or false
Which is the LEAST developed region among the following?
A) North America B) Eastern Europe C) Southwest Asia D) Western and Central Europe E) East Asia
What type of metamorphism is commonly associated with mountain building at convergent plate boundaries?
A. regional B. hydrothermal C. slow D. contact E. shock
Sea lions are easily distinguished from seals because they ________
A) cannot rotate their front flippers backward B) cannot rotate their front flippers forward C) have external ears D) have a short neck E) use their rear flippers for swimming