What causes populations to complete ?

Answer

Populations compete for resources. They compete for the basic neccesities of life such as food, water, shelter and clothing. When the populations get increased, the resources get decreased and that is why populations compete with eachother

i think the answer would d

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.