Which one of the following statements correctly describes how stream terraces can grade? Group of reply choices A temporary base level is eliminated; the stream aggrades its channel upstream from the erstwhile temporary base level, and the former floodplain is left well above the present elevation of the stream. A temporary base level is eliminated; the stream downcuts upstream from the old temporary base of operations level, and the old floodplain is left well to a higher place the nowadays elevation of the stream. Base level drops; the stream aggrades its aqueduct, and the old floodplain is left below the nowadays elevation of the stream. Base level rises; the stream downcuts, and the old floodplain is left well above the elevation of the present-day channel.
Answer: A
Caption: A stream terrace basically forms through this procedure– Temporary base of operations level is eliminated; the stream downcuts upstream from the old temporary base of operations level, and the old floodplain is left well above the present pinnacle of the stream.
Reply:
A temporary base level is eliminated; the stream downcuts upstream from the old temporary base level, and the former floodplain is left well above the present superlative of the stream.
Explanation:
The formation of steam terraces occurs when streams move down into floodplains, leaving backside some remnants of older floodplain equally steps in the form of benches forth the valley sides. A temporary base level is eliminated; the stream downcuts upstream from the one-time temporary base level, and the former floodplain is left well above the present acme of the stream.
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