11. Pollution and Pollution Control

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Which of the following is not a feature of the Eutrophic lakes?

They are generally occupied by blooms

They have high plant nutrient flux

They have low primary productivity

They are dominated by blue green algae

Which of the following work as bio indicator of environmental pollution?

Diatoms

Coral Reefs

Fishes

Lichens

Which among the following is measured by Dobson unit ?

Ozone concentration

Thermal conductivity

Soil moisture

Radiation

Contamination of drinking water with which of the following causes Blackfoot disease (BFD)?

Nitrates

Arsenic

Mercury

Cadmium

The Great Smog of 1952 took place in which of the following cities?

London

New York

Tokyo

Berlin