Q: Fact 1: Hydrogen bonds cause water to expand when it freezes. Fact 2: Frostbite is the actual freezing of tissue. Given the two facts above, what causes frostbite of tissue?

Select from the following.
A). an object
B). hydrogen bonds
C). heating liquids
D). Veins and arteries.
E). Generating heat
F). evaporation
G). heat produced
H). dehydration
The answer is:
B).