In which assisted reproduction procedure are eggs removed from a woman's ovaries, fertilized in a dish with the prospective father's sperm, and transferred to another woman's uterus?

What is the best explanation for the dog's superior sense of smell compared to ours?

a) They have long snouts. b) They are closer to the ground. c) Their olfactory epithelium is much larger. d) Their olfactory neurons project into their brain and ours don't.

If a common evolutionary heritage marks all human beings, then we should

expect (a) human behavior to be much more variable than that of other animals (b) fitness-enhancing cultural universals (c) no individual differences or group differences at all in human beings (d) people within a culture to be highly variable