Question

What are some physical limits of an ecosystem such as a river ? Does it include bed rock, algae, things like that ?

Answer 1

An ecosystem consists of the biological community that occurs in some locale, and the physical and chemical factors that make up its non-living or abiotic environment. There are many examples of ecosystems -- a pond, a forest, an estuary, a grassland. The boundaries are not fixed in any objective way, although sometimes they seem obvious, as with the shoreline of a small pond. Usually the boundaries of an ecosystem are chosen for practical reasons having to do with the goals of the particular study.

Answer 2

ohkay thank you !

Answer 3

No problem :)