In a polluted lake

Which of the following ecosystems will be more productive in terms at: primary productivity? Justify your answer. A young forest, a natural Old forest, a shallow polluted lake, alpine meadow.

Which of the following ecosystems will be more productive in terms at: primary productivity? Justify your answer. A young forest, a natural Old forest, a shallow polluted lake, alpine meadow.

Which of the following ecosystems will be more producive in term of primary productivity? Justify your answer. A young forest, a natural old forest, a shallow polluted lake, alpine meadow.

Which of the following ecosystems will be more productive in terms of primary productivity? Justify your answer. A young forest, a natural old forest, a shallow polluted lake, alpine meadow.

The cause of thermal pollution of lakes, rivers and estuaries is:

A lake has been polluted by sewage. Compared with unpolluted water, the water in this lake will have

Name the fresh water lake of A.P which ws severely polluted due to human activities.