* Dust: Dust particles, including those from soil, pollen, and industrial emissions.
* Sea salt: Tiny salt crystals released from ocean spray.
* Smoke: Particulate matter from burning fuels.
* Pollutants: Various chemical compounds released by human activities.
* Bacteria and fungi: Microscopic organisms floating in the air.
These nuclei provide a surface for water vapor to condense upon. When the air cools and becomes saturated with water vapor, the water molecules attach to these nuclei, forming tiny droplets. This process is called condensation.
