S-6 



SUPRALITTORAL ZONE 

 (Supratidal Zone) 



The portion of the seashore adjacent to the 

 tidal or spray zone. 



SURFACE AQUATIC 

 PLANTS 



( Floating Aquatic Plants) 



SYMBIOSIS 



Two organisms of different species living 

 in close association , one or both of which 

 may benefit and neither is harmed. Such a 

 phenomenon is found among organisms in biological 

 treatment processes. 



SYNERGISM 



The joint action of two or more substances is 

 greater than the sum of the action of each 

 of the individual substances; e.g., action of 

 certain combinations of toxicants . The 

 improvement in performance achieved because 

 two agents are working together. (See 

 Antagonism) 



SYNTHESIS 



The production of a substance by the union 

 of elements or simpler chemical compounds. 



SYSTEMATICS 



( Taxonomy ) 



