Check all that apply: Check the agents for mechanical weatheringWindGravityGlaciersWater

All of the options listed can be agents for mechanical weathering. Here's how:

1. Wind: Wind can cause mechanical weathering by blowing sand and other small particles against rock surfaces, causing them to erode over time.

2. Gravity: Gravity can cause mechanical weathering through processes like landslides and rockfalls, where rocks are pulled down slopes by gravity, breaking apart when they hit the ground or other rocks.

3. Glaciers: Glaciers cause mechanical weathering through a process called plucking, where they freeze onto rocks and then pull pieces away as they move. They also grind down rocks beneath them through a process called abrasion.

4. Water: Water causes mechanical weathering in several ways. One is through freeze-thaw cycles, where water seeps into cracks in rocks, freezes and expands, causing the rock to break apart. Water also causes mechanical weathering through the movement of waves and currents, which can erode rock surfaces.