_ With reference to a fresh water lake, consider the following characteristics:1. Richness in nutrients2. Rapid turnover of phytoplankton3. Depletion of dissolved oxygenWhich of the above is/are observed in a lake after its eutrophication?$?

_ With reference to a fresh water lake, consider the following charact

1.	_ With reference to a fresh water lake, consider the following characteristics:1. Richness in nutrients2. Rapid turnover of phytoplankton3. Depletion of dissolved oxygenWhich of the above is/are observed in a lake after its eutrophication?$?
A.	1 only
B.	1 and 2 only
C.	3 only
D.	1, 2 and 3
Answer» D. 1, 2 and 3