Which of the following is a unit of productivity?
A. g-2 or kcal m-2
B. kcal
C. g
D. g-2 yr-1 or kcal m-2 yr-1
Answer:D
Which of the following is a unit of productivity?
A. g-2 or kcal m-2 B. kcal C. g D. g-2 yr-1 or kcal m-2 yr-1