Here's a breakdown:

* Salt: Comes from sea spray, where ocean waves break and release tiny droplets of salt water. These droplets evaporate, leaving behind salt particles that can be carried into the atmosphere.

* Dust: Comes from various sources like soil erosion, volcanic eruptions, and even human activities. Dust particles can be composed of minerals, organic matter, and other materials.

Other solid particles in the atmosphere include:

* Soot: A type of black carbon produced by burning fuels like wood, coal, and oil.

* Pollens: Released by plants during the pollination season.

* Spores: Released by fungi and other microorganisms.

* Aerosols: Tiny particles suspended in the air, including both solid and liquid forms.