question_answer 30)

  Nuisance growth of aquatic plants and bloom-forming algae in natural water in generally due to high concentrations of (a) Carbon                           (b) sulphur                          (d) calcium                          (d) phosphorus

Answer:

                  (d) Nuisance growth of aquatic plants and bloom the forming algae in natural water bodies is generally due to high concentration of dissolved organic and inorganic nutrients materials phosphorus favours the growth of aquatic weed plants like Eichhornia (water hyacinth) and certain blue-green algae.