Match Column-I with Column-II and select the correct answer from the codes given below.
| Column I | Column II |
| A. Gross primary productivity | i. Self-sustainable ecosystem |
| B. Net primary productivity | ii. Human regulate ecosystem |
| C. Lake | iii. O₂ requiring process |
| D. Aquarium | iv. Photosynthetic production |
| E. Decomposition | v. Available to primary consumers |
- AA-iv, B-ii, C-i, D-iii, E-v
- BA-iv, B-v, C-i, D-ii, E-iii
- CA-i, B-iii, C-ii, D-iv, E-v
- DA-ii, B-i, C-iii, D-v, E-iv
✓ Correct answer: B
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