The marine nitrogen cycle: new developments and global change

: Nitrogen Cycle nitrogen cycle In National 4 Biology discover how atmospheric nitrogen is processed by bacteria, allowing plants and animals to build essential proteins product life cycle Quick Reference An important chemical cycle, consisting of a complex series of processes that circulate nitrogen between the atmosphere and animals, plants,

carbon cycle Earth's atmosphere contains about 78% nitrogen Plants cannot use nitrogen in its N2 form, so it must be transformed through a process