Answer:
Organisms change gradually through evolution on a timescale similar to the formation or "evolution" of mountains.
Step-by-step explanation:
Organisms may have lifespans of irrelevant length compared to a mountain, but just as mountains are slowly formed over eons, organisms gradually change and diversify through evolution.
Organisms live and die to weed out inefficiencies in their species—over time, the adaptations formed by evolution drastically change the organism, mirroring the gradual change of flat land on a tectonic plate forming a sky-high mountain.