Civil Services UKPSC Lower PCS Mock Test Series 2024 General Knowledge Ecology and Environment Environment Problems
Which of the following could result in the occurrence of dead zones?
1. Eutrophication
2. Stratification of the water column
3. Upwelling
Select the correct answer using the code given below.
1
1 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3