A complex sound is a combination of a fundamental frequency and overtones

Which is an example of a secondary sex characteristic?

A) Genitals B) Ovaries C) Pubic hair D) Sperm

Which of the following students provides the most accurate information about gender comparisons in facial expressions?

a. Phil: "Men show a wider range of facial expressions than women do.". b. Alma: "Women often smile because they are uncomfortable, not because they are enjoying something.". c. Angela: "When people look at a photo of an angry man, they are likely to say that he is somewhat afraid; in contrast, they say that a photo of an angry woman is expressing only anger.". d. Sedrick: "The most recent research shows no evidence of gender differences in facial expression.".