Swarming, which often occurs in spring, is a hive's natural means of reproducing.
The worst disorder to affect the fifth nerve is the cluster headache, which often occurs in acute periods, separated by symptom-free times.
The firms hope smart contact lenses could also be used to correct long-sightedness, which often occurs in middle or old age.
Dispersed ownership (which often occurs when founding families sell shares to finance growth) leads to a separation between ownership and control.
Unlike the Nobel in physics, the Fundamental Physics Prize can be awarded to scientists whose ideas have not yet been verified by experiments, which often occurs decades later.
She noted that the discovery of birth defects, which often occurs in the second trimester, was a common reason for later abortions.
Much of the violence, which often occurs during holiday festivals or on weekends, breaks out for no apparent reason, Mr. Chalerm said.
If the assumption fails, which often occurs, the outcome is a misleading comparison.
Sodium is a highly soluble chemical element which often occurs naturally in groundwater.
Kawasaki disease (KD) is a systemic vasculitis of unknown cause, which often occurs in young children.
Note that the dependence of the functions on the switching rule is a generalization which often occurs in practical cases.
