Which of the following phrases describes a typical river mouth? a. clearer water with high levels of oxygen b. decreased vegetation and lower oxygen levels c. increased species diversity d. high levels of vegetation

a. clearer water with high levels of oxygen

River mouth is the region where the river enters into another river, lakes, pond, ocean or any other water body. The transferred water from the river will be from the topmost layer. This layer will be free from aquatic plants growth which actually take up oxygen fro respiration. Moreover, the flow of water current will be fast therefore no aquatic animal will be present. This layer will also be free from aquatic ecosystem contamination. Therefore, the water will be clear and contain high levels of oxygen.

it's b on edge

Explanation:

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