People began measuring intelligence through tests roughly__________ years ago

Drugs that decrease a neuron's receptor site activity are called

A) agonists. B) antagonists. C) excitatory. D) reuptake blockers.

Sexually transmitted infections (STIs) are diseases that are contracted primarily through sexual contact. This contact can include:

a. oral-genital contact. b. anal-genital contact. c. vaginal intercourse. d. all of the above types of contact.