Which of the following is a potential drawback of using jetties to prevent beach erosion?

Jetties block boats from being able to enter harbors.

Building jetties are more expensive than soft beach management strategies.

Beach erosion may increase on the downdrift side of the jetties.

Jetties are not effective until plant life has time to grow.

Question

Biology

Terry Benton

5 May, 22:35

Which of the following is a potential drawback of using jetties to prevent beach erosion?

Jetties block boats from being able to enter harbors.

Building jetties are more expensive than soft beach management strategies.

Beach erosion may increase on the downdrift side of the jetties.

Jetties are not effective until plant life has time to grow.

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Answers (1)

Know the Answer?

Kai Wilkinson · Answer 1

Answer: C - Beach erosion may increase on the downdrift side of the jetties.

Explanation:

Beach erosion may increase on the downdrift side of the jetties.

On the up drift side of a jetty there is accumulation of sand while the opposite effect takes place on the down drift side. This erosion is caused by the jetty due to the lack of sand which is trapped on the other side. Ironically, Jetties, which are built to prevent erosion, end up causing more damage than providing a solution.