What are three things that can cause abrasion?

Abrasion is the process of scraping or wearing away of the surface of something by friction or rubbing. Here are three things that can cause abrasion:

- Sand and dust: Sand and dust particles are hard and abrasive, and can cause abrasion when they rub against a surface. This is especially common in desert environments, where sand and dust are often carried by the wind.

- Metal: Metal objects, such as tools, machinery, and vehicles, can also cause abrasion. This is because metal is hard and can easily scratch or gouge a surface.

- Chemicals: Some chemicals, such as acids and bases, can also cause abrasion. This is because they can dissolve the material on the surface of an object, weakening it and making it more susceptible to abrasion.