Question

46. The factor which affects the dissolved
oxygen in water
(A) Flow
(B) Organic waste
(C) Water temperature
(D) All of these​

Answer 1

Answer:

Dissolved oxygen concentrations are constantly affected by diffusion and aeration, photosynthesis, respiration and decomposition. While water equilibrates toward 100% air saturation, dissolved oxygen levels will also fluctuate with temperature, salinity and pressure changes ³.