sea, and as juveniles. The regions in many coastal areas are highly ed today due to constant disturbance from the mainland in the form of pollution- al pollution, discharge from sewage system, silt, and etc. Such disturbances in the e and coastal areas make migration of diadromous fishes to their spawning areas and adversely affect their populations by acting as the major blockage in the life these species. de Questions: 1. What biotic components can be found in estuaries? 2. Name the role in ecosystem of the biotic components found in estuarie 3. What characteristics of the abiotic factor in estuaries make it suitable fo spawning? 4. What are the abiotic factor disturbances mentioned in the paragraph? 5. How do the abiotic factors affect in the life cycle of fish species? e the definitions of the underlined words used in the paragraph. 1. 2. Vmte 4