Question
| Column I (Phenomena) | Column II (Effect) |
| (1) Eutrophication | (a) Soil erosion |
| (2) Biomagnification | (b) Prevention of extinction |
| (3) Conservation | (c) Accumulation of non-biodegradable substance |
| (4) Deforestation | (d) Death of aquatic ecosystem |
| Column I (Phenomena) | Column II (Effect) |
| (1) Eutrophication | (a) Soil erosion |
| (2) Biomagnification | (b) Prevention of extinction |
| (3) Conservation | (c) Accumulation of non-biodegradable substance |
| (4) Deforestation | (d) Death of aquatic ecosystem |
| Column I (Phenomena) | Column II (Effect) |
| (1) Eutrophication | (d) Death of aquatic ecosystem |
| (2) Biomagnification | (c) Accumulation of non-biodegradable substance |
| (3) Conservation | (b) Prevention of extinction |
| (4) Deforestation | (a) Soil erosion |
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| Column I [Phases] | Column II [Hormonal changes] |
| (1) Menstrual phase | (a) Rapid secretion of LH |
| (2) Proliferative phase | (b) Increased level of FSH and estrogen |
| (3) Ovulatory phase | (c) Increased level of progesterone |
| (4) Secretory phase | (d) Decrease in progesterone and estrogen |