Why are flocs important in biographical treatment of waste water?

Discuss the biological treatment of waste water in a STP.

Why is ozone layer important ?

Which one of the following impurities is easiest to remove from waste water?

What are flocs? State their role in effluent treatment and their ultimate fate in sewage treatment tank.

Why is aerobic degradation more important than anaerobic degradation for the treatment of large volumes of waste water in organic matter. Discuss.

Why root pressure is not an important factor for upward movement of water in the tall trees.

Why abiotic factors are important?

What is the best solution for the treatment of electronic wastes?

Why is the leaf an important organ of the plant ?