What is skin cancer and how does it occur?

Skin cancer is the uncontrolled growth of skin cells.  

Explanation:

They grow and divide without stopping, and they can spread to other places in your body.

Skin cancer is frequently caused by exposure to ultraviolet rays from the sun or from tanning beds.

The UV light can cause mutations in your skin’s DNA so it can’t control skin cell growth. The result is often skin cancer.

genetic variation will increase because of a new habitat and food source.

explanation:

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.