| List-I (Concept) | List-II (Proposed by) |
| (A) Ecology | (II) Norman Myers |
| (B) Ecosystem | (IV) Ernst Haeckel |
| (C) Human population growth | (I) Sir Arthur Tansley |
| (D) Hot spots | (III) T R Malthus |
To establish accurate associations between environmental concepts and their proponents, the following matches are derived from historical records:
The established pairings are: (A) - (IV), (B) - (I), (C) - (III), (D) - (II)