The lifespan of a hedgehog in captivity is usually ___________________ than in the wild

"Everyday" calls are the most dangerous kinds of calls the paramedic will run because:

A) everyday calls tend to attract a lot of bystanders. B) law enforcement personnel are often not available. C) he or she becomes naturally comfortable with them. D) most of these calls have a high potential for violence.

At –183° C, which of the following gases exists as a pale, bluish liquid that is slightly heavier than water?

a. Air c. Nitrous oxide b. Oxygen d. Carbon dioxide