What process occurs within stars that makes them different from other objects in the universe

Stars are formed when a large cloud of gases containing hydrogen and helium heat up and collapse into a mass of hot sphere due to the force of gravitational pull. These hot gases inside the hot massive sphere are subjected to immense pressure due to the gravity. The atoms of these gases collapse and fuse with the neighbouring atoms to undergo the process of atomic fusion. This process releases so much energy that the hot mass of sphere starts to glow and become a star.

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.

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d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.