1.   The road was built into the mountainside, with deep ravines dropping away below.

2.   And in winter, you need to be able to drain the plumbing system when temperatures drop below freezing.

3.   At nurseries the trees usually sit outside, where the temperatures often drop below freezing.

4.   A thick fog formed early Monday morning, and as the temperature dropped below freezing, the fog droplets became super-cooled.

5.   Even sophisticated planes sometimes leave the radar screen, though, most commonly by dropping below monitoring level or when flying between mountains.

6.   Hundreds of people were living in tents as nighttime temperatures dropped below freezing.

7.   If the bone-chilling weather continues, the temperatures inside the house may drop below freezing.

8.   In the mountains, temperatures regularly drop below freezing at night.

9.   Siksiks hibernate alone from September to April, and their body temperature actually drops below freezing.

10.   Temperatures across most of the country may drop below freezing tonight, according to Weather Services in Lexington, Massachusetts.