Of the four natural forces that cause weathering and erosion to occur, select TWO, and discuss HOW those forces cause weathering and erosion to occur.

Sure, here are two of the four natural forces that cause weathering and erosion:

1. Water: Water is a major force behind both weathering and erosion. Weathering occurs when rocks and minerals on the Earth's surface are broken down by water through a process called hydration. This is when water molecules combine with a mineral to form a new substance that is softer and weaker. Erosion, on the other hand, is the process of moving the weathered rock and mineral particles from one place to another. This can occur through rainfall, which can wash away loose particles, or through rivers and streams, which carry particles downstream.

2. Wind: Wind can also cause both weathering and erosion. Weathering occurs as wind carries small particles like sand and dust that abrade, or wear down, larger rocks over time, a process known as deflation. Erosion by wind occurs as these small particles are picked up and transported to new locations. This is most common in desert landscapes and on coastlines.

In summary, water and wind cause weathering by breaking down rocks and minerals on the Earth's surface, and they cause erosion by moving these broken-down particles from one place to another.