Producers are things such as plants that are fed off of but do not eat other producers or organisms..
rather, preferably, alternately
you can use or , otherwise, or rather than.
Biodiversity
seaweed,phytoplankton, diatoms,Crill, algea, Seagrass, dinoflagellates (a single-celled organism with two flagella, occurring in large numbers in marine plankton and also found in fresh water),...