Correct answer
C. Biological action is used
Explanation
The correct answer is Biological action is used.
Viscosity of water in comparison to mercury is ________?
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its________?
Independent displacement components at each joint of a rigid-jointed plane frame are________?
For house drainage minimum gradient is________?
What type of depreciation is due to the reduction of the physical ability of an equipment or asset to produce results?
When trying to turn a key into a lock, following is applied________?