What role do air and water play in natural separation processes?

Air and water play an important role in natural separation processes by helping separate substances based on weight, density, and solubility without human intervention.

Air is mainly involved in processes like winnowing, where lighter particles such as husk are blown away while heavier grains fall down. In nature, wind also helps in separating dust, seeds, and other light particles.

Water helps in separation through processes like sedimentation and dissolution. Heavier particles settle at the bottom in water, while some substances dissolve in it. For example, mud settles in still water, and soluble substances like salt dissolve easily.

In simple terms, air helps in separating lighter and heavier particles, while water helps in settling, dissolving, and separating substances naturally.