Orogenesis is the process of mountain formation, usually caused by the movement of tectonic plates.
Orogenesis is a natural process that happens over a very long time.
Examples:
The collision of the plates causes orogenesis.
The orogenesis of the Himalayas took millions of years.
We can see the result of orogenesis in the shape of the mountains.
The orogenesis of the Rockies made them very tall.
The orogenesis of the Andes created some of the highest peaks in the world.
The orogenesis of the Alps is a famous example of mountain formation.