Around 10,000 years ago, the lake level dropped dramatically, probably to levels even lower than today.

Air pressure will have dropped to lethal levels in ten hours.

After his firing, the death rate at the hospital dropped to prior levels.

Employment at the factory has dropped from 22,000 in 1969, to its current level of 4,000.

Unemployment has dropped to its lowest level in four years.

For the week, it dropped 12.56 points, or 3.3 percent, to its lowest level since July 24.

On the other hand, your child's blood sugar level can drop to dangerously low levels in minutes.

Significantly, the figures at both houses dropped to levels last seen in the 1986-87 season, just before art prices took off.

After some years the population number dropped to pre-war levels.

The heart rate slows and the blood pressure can drop to dangerous levels.