Feedback always occurs when

A.
the input of a system comes back to influence the output of and processes involved in that system.
B.
the output of a system comes back to influence the subsequent functioning of that system.
C.
no new raw materials are added to the system.
D.
no products or wastes are formed by the system.

the output of a system come s back to influence the subsequent functioning of that system.

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.