The 10°C isotherm for average July temperatures is used as the environmental criteria to define
A)the Arctic region.
B)the Antarctic convergence.
C)the Antarctic region.
D)roughly the region of the 45th parallel.
E)the subtropical boundary.

Question

Quizplus · Accepted Answer

The 10°C isotherm for average July temperatures is commonly used to define the boundary of the Arctic region, as it marks the limit of the area where the average temperature in July does not exceed 10°C.

The 10°C Isotherm for Average July Temperatures Is Used as the Environmental