3. UV: Which bands of UV light are most likely to ionize human skin cells?
How can UVC be used to purify air in houses and buildings?
Identify a use for ultraviolet light in a dentist’s office.

The religious conflict that took place in northern ireland in the 20th century was between which of the following?

Asafe and responsible driver must have a. a positive attitude towards driving b. a friend in the car to navigate c. a gps system d. the ability to drive aggressively

Margaret, a vegetarian, is looking for a mushroom with a meaty texture to grill and eat instead of a hamburger. which of the following mushrooms would you recommend?                 a.  lobster      b.  matsutake      c.  shiitake      d.  portobello