Sternberg's model includes ____ distinct but related forms of intelligence

The hair, the outer layer of skin, and the nervous system develop from the

a. ectoderm. c. mesoderm. b. endoderm. d. germ disc.

Which of the following is NOT true of nicotine addiction?

A) Animals self-administer nicotine. B) Nicotine use is a habit, not an addiction. C) Most smokers smoke every day. D) Smokers continue to smoke after lung cancer or heart attacks. E) Humans smoke regularly or not at all.