Nucleotides are the building block for nucleus acids the nucleotides that build dna are required to have which of the following pieces

1. is geographic distribution

2 is increasing complexity

3 is transitional forms

the answer is c.

by: nicholas dooley

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.