At present, glaciers retreat velocity is:
A. 1.7 mm per annum
B. 2.2 mm per annum
C. 2.5 mm per annum
D. 2.8 mm per annum
Answer:A
At present, glaciers retreat velocity is:
A. 1.7 mm per annum B. 2.2 mm per annum C. 2.5 mm per annum D. 2.8 mm per annum