Which of the following can cause beach erosion? what are the two correct answers.
1. shifting shorelines
2. sandbars
3. storm waves
4. ocean currents
5. dune vegetation
The two correct answers are:
1. Storm waves
2. Ocean currents.
To determine which of the following can cause beach erosion, let's examine each option:
1. Shifting shorelines: Shifting shorelines can contribute to beach erosion. As currents and wave action exert their influence, the position of the shoreline can fluctuate, leading to erosion in some areas.
2. Sandbars: Sandbars typically do not cause beach erosion. Sandbars are ridges of sand that form underwater, parallel to the shoreline. They can actually help protect the beach by acting as a natural barrier against wave action.
3. Storm waves: Storm waves have a significant impact on beach erosion. During strong storms, powerful waves can erode the beach by removing sand and sediments from the shoreline.
4. Ocean currents: Ocean currents can cause beach erosion. If strong ocean currents move along the shoreline, they can carry away sand and sediments, gradually eroding the beach.
5. Dune vegetation: Dune vegetation, such as grasses and plants, actually play a crucial role in preventing beach erosion. Their roots help hold the sand in place, stabilizing the dunes and protecting the beach from erosion.
Based on the explanations above, the two correct answers that can cause beach erosion are:
1. Shifting shorelines
3. Storm waves
The two correct answers that can cause beach erosion are:
1. Storm waves: Strong waves generated by storms can erode and reshape the beach by carrying away sand and sediments.
2. Ocean currents: Strong currents can remove sand from a beach and transport it elsewhere, causing erosion.