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People sometimes take machines out into deep water to "mine" sand and bring it back to beaches. dumping a lot of new sand on a beach usually causes:
The beach to lose the new sand over the next year or years, as waves and currents move the sand back to deeper water.
Waves and currents move large amounts of sand. To compensate, a large amount of sand must also be moved. Building a beach out of quarried sand works well, but the sand quickly returns to deep water. So, in most cases, this work has to be repeated every year or several years to keep the beach large and sandy.
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Question: People sometimes take machines out into deep water to "mine" sand, and bring it back to beaches. Dumping a lot of new sand on a beach usually causes:
The beach to lose the new sand, but only after centuries or millennia, far to long to care about.
The beach to grow for centuries or millennia, as the new sand traps even more sand.
The beach to sink under the weight of the new sand, causing tidal waves to wipe out the boardwalks.
The beach to grow for decades, as the new sand traps even more sand.
The beach to lose the new sand over the next year or years, as waves and currents move the sand back to deeper water.
Learn more about new sand on the beach here: https://brainly.com/question/16172981
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