Which segments of dna that code for specific traits

Gene. A segment of a DNA molecule  that codes for a particular protein and determines the traits of the individual. A gene is the basic unit of heredity in a living organism

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biology is the study of life. it is the study of living organism.

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.