| List-I | List-II | ||
| (A) | Deforestation | (I) | Responsible for heating of Earth's surface and atmosphere |
| (B) | Reforesation | (II) | Conversion of forested areas to non-forested areas |
| (C) | Green-house effect | (III) | Natural ageing of lake by nutrient enrichment of its water |
| (D) | Eutrophication | (IV) | Process of restoring a forest that once existed but was removed |
| Options: | (A) | (B) | (C) | (D) |
| 1. | IV | III | II | I |
| 2. | I | II | III | IV |
| 3. | III | I | II | IV |
| 4. | II | IV | I | III |
If an agricultural field is liberally irrigated for a prolonged period of time, it is likely to face the problem of:
| 1. | Metal Toxicity | 2. | Alkalinity |
| 3. | Acidity | 4. | Salinity |