Why is nitrogen a growth-limiting nutrient for many organisms?hO Only a few microbes can extract it from the atmosphere, but all eukaryotes require it for lipid and carbohydrate synthesis. Only a few microbes can extract it from the atmosphere, but all organisms require it for amino acid and nucleotide synthesis.O Only a few microbes can extract it from the atmosphere, but all organisms require it for lipid and carbohydrate synthesis.O Only a few microbes can extract it from the atmosphere, but all eukaryotes require it for amino acid and nucleotide synthesis.