Ultraviolet rays are potentially harmful to us primarily due to their
a. high frequency. b. amplitude. c. intensity. d. long wavelength.

Patrick's parents are worried that he may face discrimination in his new neighborhood. which factor is most likely to cause worry to his parents? a. patrick has unusual pets at home. b. patrick belongs to a different culture than that of the majority group. c. both patrick's parents hold jobs outside the home. d. patrick likes a particular sport.

What creates an electric force field that moves electrons through a circuit? a. energy sourceb. loadc. metal wiresd. resistance

In this model, what do p, s, and a bases represent?