Assume that a glacier is melting at a constant rate of 50 meters per year and that site A is 1.6 km closer to the ice edge than site B is. Based on this data and the principle of "space for time substitution," we can assume that the conditions seen at site A in 2011 are the same as those that _______ seen at site B in _______.
A) were; 1979
B) were; 1995
C) were; 2003
D) will be; 2027

Question

Quizplus · Accepted Answer

The glacier is melting at a constant rate of 50 meters per year, and site A is 1.6 km closer to the ice edge than site B is. This means that the conditions seen at site A in 2011 are the same as those that were seen at site B in 1979 (1.6 km / 50 m/yr = 32 years).

Assume That a Glacier Is Melting at a Constant Rate