Why are bacteria needed in the nitrogen cycle

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Amarine ecologist has constructed the conceptual model shown in the diagram. what predictions can be made from using this model? where the tertiary consumers get their energy how often primary producers are able to reproduce when bacteria and fungi initiate the process of decomposition whether other secondary consumers are present

Aresident is five feet tall. what is the measurements in iches