Need help with DNA and genes

if you know your abc's you should be able to get your answer or just use google

burning fossil fouls really decrease the carbon in the atmosphere so b

a metamorphic rock would be formed.

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.