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Algal blooms impart a distinct colour to...

Algal blooms impart a distinct colour to water due to :

A

their pigments

B

excretion of coloured substances

C

formation of coloured chemicals in water facilitated by physiological degradation of algae.

D

absorption of ligh by algal cell wall

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MBD-ENVIRONMENT ISSUES-EXERCISE
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  7. Make a list of impurities present in domestic sewage.

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  8. Explain algal bloom.

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  9. Expalin : Radioactive waste

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  11. What is organic farming ? Discuss the benefits

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  12. Discuss the causes and effects of water pollution. What measures need ...

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  13. When huge amount of sewage is dumped into a river , the BOD will:

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  14. "mango necrosis" is due to :

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  18. Differentiate between hibernation and aestivation.

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  20. What is the difference between BOD & COD?

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