Answer:
A reference point.
Explanation:
Reference point:
A reference point is a point which is used to determine weather the object is in motion or not. The moving object is compared with the reference point.
An object is in the state of motion when its distance is changed relative to the other object or reference point.
In order to determine weather an object is moving or not a point of reference is needed.
Without reference point displacement can not be measured
Pb(BrO3)2 is an ionic compound, Pb is a metal, (BrO3) is a non-metal part.
Pb(BrO3)2 is a salt, all salts are ionic compounds.
D NACL because it is ionic bond and all the others are covalent
The answers are I, II and IV
No matter how much water a human
drinks, the kidneys are always regulating various aspects of the blood,
including the pH of the blood, the plasma concentration of iron ions and the
plasma concentration of potassium ions.