What happens when a cell divides?
a. the cell's volume increases.
b. each daughter cell receives its own copy of the parent cell's dna.
c. it becomes more difficult for the cell to get enough oxygen and nutrients.

hurry

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.