Sagot :
about 78 percent nitrogen (N2),about 21 percent oxygen (O2),1 percent are various other gases, including carbon dioxide, argon, water vapor and others. ... Nitrogen, participates in the biological cycle of matter in nature.
about 78 percent nitrogen (N2),about 21 percent oxygen (O2),1 percent are various other gases, including carbon dioxide, argon, water vapor and others. ... Nitrogen, participates in the biological cycle of matter in nature.