Ascites refers to abnormal accumulation fluid in the abdominal (peritoneal) cavity. The most common cause of ascites is cirrhosis of the liver. Treatment of ascites depends on its underlying cause.
Ecosystem. A functional system that includes an ecological community of organisms together with the physical environment, interacting as a unit. Ecosystems are characterized by flow of energy through food webs, production and degradation of organic matter, and transformation and cycling of nutrient elements.
An ecosystem is a system which is formed when a community of organisms interacts with the environment. An ecosystem is basically an organism community which interacts with one another and their environment in such a way that energy is transferred between them and system-level processes like the cycle of elements emerge.