Stream is the freshwater ecosystem that involves the movement of water flow slow and usually in more than one direction. Thus, the correct option is A.
What is an Ecosystem?
An ecosystem may be defined as an area or place in which organisms of multiple species live together and interact with one another for the purpose of food, shelter, and space.
A Bog is an area of ground that is very soft and wet in appearance. Slough may be defined as the dead tissues that diverge from living tissue.
A Stream is a flow of water especially in more than one direction depending on the force and pressure applied to it.
Therefore, the correct option for this question is A.
To learn more about Freshwater ecosystem, refer to the link:
https://brainly.com/question/11986291
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