Replenishment of dissolved oxygen in water stream polluted with
industrial waste occurs by
(A) Natural aeration of water stream
(B) Photosynthetic action of algae
(C) Both (A) & (B)
(D) Neither (A) nor (B)
industrial waste occurs by
(A) Natural aeration of water stream
(B) Photosynthetic action of algae
(C) Both (A) & (B)
(D) Neither (A) nor (B)