Question

how do erosion and deposition work together to create a moraine?
waves cause erosion along coastlines and deposit sand away from the shore.
surface water in rivers causes erosion, carrying sediment that gets deposited near an ocean.
glaciers cause erosion as they melt, carrying sediment that gets deposited in a thick layer.
winds cause erosion by blowing around sand that gets deposited in large piles.

Explanation:

To determine the correct answer, we analyze each option:

• The first option describes coastal wave erosion/deposition, not related to moraines (formed by glaciers).
• The second option is about river erosion/sediment deposition near oceans, not moraines.
• The third option: Moraines are formed by glaciers. Glaciers erode (pick up sediment) as they move (or melt) and deposit the sediment in thick layers, which matches how moraines form.
• The fourth option describes wind - blown sand deposition (like sand dunes), not moraine formation.

Answer:

C. Glaciers cause erosion as they melt, carrying sediment that gets deposited in a thick layer.