Answer: WIND EROSION; WATER EROSION.
Explanation: Shelterbelt in its simplest definition is a row of trees that acts as a windbreak.
Shelterbelt is also known as a windbreak. They prevent erosion caused by wind.
Terraces can be defined as a raised, flat-topped bank of earth with sloping sides, especially one of a series for farming or leisure; a similar natural area of ground, often next to a river. They help in the prevention of erosion caused by water.