Explain the secondary treatment of sewage.

Treatment of sewage involves

Explain the symptoms and treatment of AIDS.

Explain the waste water treatment process.

Explain the process of primary treatment of sewage.

Write a note on the tertiary treatment of Sewage water.

Explain chemical method of treatment of wastewater?

Treatment of cancer is:

Explain the secondary sex characteristics of boys .

Explain the secondary sex characteristics of girls .

Match column I with column II and select the correct answer from the given codes. {:(Column I,Column II),(A. "The stage in which of physical treatment of sewage is done",(i)"Anaerobic digestion activated sludge and production of biogas"),(B."The stage in which biological treatment of sewage is done",(ii)"Activated sludge"),(C."Name of the sediment in primary treatment",(iii)"Aeration tanks"),(D."It is carried to aeration tanks from primary",(iv)"Primary effluent"),(E."Name of the sediment in secondary treatment",(v)"Primary sludge"),(F."site of flocs growth",(vi)"Secondary treatment"),(G."Function of sludge digester",(vii)"Primary treatment"):}