Which of the following shows the evolutionary relationships between organisms? Branching tree
Binomial nomenclature
Three-domain classification
Taxonomic key

not sure if this is what you'r looking for nnew= nold

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully

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.