Mark-to-market accounting can become volatile if market prices fluctuate greatly or change unpredictably.

Wintering waterfowl numbers fluctuate greatly, but can exceed 10,000 birds yearly.

Acorn production can fluctuate greatly from year to year, affecting the squirrel population.

In addition, temperatures usually fluctuate greatly in springtime.

His bowling average, however, often hovers around the low-30s, though it can at times fluctuate greatly.