The cochlea is divided lengthwise by the ______

LeBron has a yo-yo that glows in the dark. Unlike his 3-year-old sister, LeBron knows perfectly well that when the yo-yo is glowing it's not suddenly a different object. This illustrates the concrete operation called:

A) associativity. B) combinativity. C) identity or nullifiability. D) reversibility.

Which of the following statements is true?

a. Girls are at greater risk for developing Gender Identity Disorder. b. Girls are at greater risk for developing many childhood problems, ranging from autism to hyperactivity to elimination disorders. c. In childhood, problems of anxiety and depression affect girls more often than boys. d. In adolescence, problems of anxiety and depression affect girls more often than boys.