Arrange the following ecosystems in descending order of net primary productivity (kg / m2 / year).
A. Midlatitude grassland
B. Open ocean
C. Freshwater swamps and marshes
D. Midlatitude forest
Choose the correct answer from the options given below:
1
C, D, A, B
2
D, C, A, B
3
D, C, B, A
4
C, D, B, A