Which statement best describes the motion of the falling ball in the picture? The ball is at a constant speed.
The ball is slowing down.
The ball is changing direction.
The ball is speeding up.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

bc blah

explanation:

bc blah

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.