Question

Rivers are lentic ecosystems bordered by riparian habitat and absorb oxygen as they flow downhill.

Answer 1

Answer:

Rivers absorb oxygen as they flow

Explanation:

This is because ,It is bordered by riparian habitat and the riparian habitat absorbs oxygen as the flow downhill but it isn't Rivers.It is the border which is riparian habitat which is specified In the question.

Answer 2

Answer: River absorb oxygen as they flow

This is a common misconception about rivers that are border by a riparian habitat. The question asks which is not true and it is that the river absorbs oxygen as they flow. Although they do absorb oxygen as they flow in any other circumstance.