3. Two years of dry weather are followed by two wet years, causing the grass population to rise. How will the increase in grass affect the animal populations? O A. Only the prairie dog population will increase
OB. Only the ferret population will increase.
O C Only the fox population will increase
OD. The populations of prairie dogs, ferrets and foxes will all increase
4. Frogs eat flies, snakes eat frogs, and hawks eat snakes. What would happen to the frogs if the hawk population suddenly decreased?

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.