The process by which words or information are grouped together to form a whole is

When a cell divides it copies each one of its chromosomes prior to dividing. the process of mitosis results in one full set of chromosomes at the pole of each cell. the cell then divides into two cells. each of these two new cells has one full set of chromosomes. 

fyi if you don't know: the dna is part of the chromosome.

It is important because it helps us to be safe and to be aware where to build our infrastructures

By bringing or providing water to mars.