Question

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

Which part of this sentence is not true?
O River flow downhill.
O Rivers are lentic ecosystem
O Rivers absorb oxygen as they flow
O Rivers are bordered by riparian habitat

Answer 1

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.