The amount of dissolved oxygen- this water quality indicator should be used to determine the acidity level of the river water which get contaminated by the discharge of waste water.
Option: B
Explanation:
Industrial effluents contaminated river water. If a industry located in the bank of the river then all its waste water will go in the river water and will pollute the fresh water. To judge the water quality of river there are several indicators but the amount of dissolved oxygen is the best indicator.
Like eutrophication refers to the rising up of phosphate level of the water which decreases the dissolved oxygen level which is harmful for aquatic life. If the dissolved oxygen level disturbed then biological oxygen demand of the water will increase and will adversely affect aquatic life.
Answer:
B
Explanation:
Being willing is being able to do anything you out your mind too
Answer:
Explanation:
Membrane, in biology, the thin layer that forms the outer boundary of a living cell or of an internal cell compartment. The outer boundary is the plasma membrane, and the compartments enclosed by internal membranes are called organelles. Biological membranes have three primary functions: (1) they keep toxic substances out of the cell; (2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles and between the cell and the outside environment; and (3) they separate vital but incompatible metabolic processes conducted within organelles.