Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Main types of nutritional symbioses in the marine environment. (a) CO2, O2, SO3, SO4, H2S, DIN, CH2O: carbon dioxide, oxygen, sulfite, sulfate, hydrogen sulfide, dissolved inorganic nitrogen, saccharides; (b) CH4, NH4: methane and ammonium; (c) H2CO3, DIP, DFAA: bicarbonate, dissolved inorganic phosphorus, dissolved free amino acids, (d) N2: dinitrogen
