"Determination of Biological oxygen demand (BOD) can help in suggesting the quality of a water body. " Explain

Explanation

Biological oxygen Demand (BOD) : It is the arnount of dissolved oxygen required by the aerobic organisms to break down the organic to break down the organic material present in water body at a given temperature over a certain period of time. Natural water bodies contain a certain level of organic substances that are acted upon and decomposed by microbes. Determining the BOD of the water body establishes the amount of organic content in it. Presence of more organic waste increase , indicating that the water body is establishes the amount of organic content in it. Presence of more organic waste increase the biological activity, leading to algal blooms. High BOD value indicates more microbial activity , indicating that the water body is polluterd .