CSS :: Ecology and General Silviculture

@ : Home > Agriculture > Ecology and General Silviculture

An ecosystem is:

[A].	A functional unit of biotic and abiotic components which have an energy source	[B].	Either a part of land surface, a body of fresh water or the open oceans
[C].	A functional unit consisting of sunlight, air water and minerals	[D].	A system consisting of an energy source, producers and consumers

Answer: Option A