Orcas ,or killer whales are natural predator of sea otter it has been observed that in region where the sea otter are not present ,sea urchins grow rapidly and destroy much of the natural kelp vegetation

ability to bond woth oxygen

because the light is a great source of energy for the plants to survive. (i hope this )

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.