Sebaceous glands are important to homeostasis because its secretions: (Learning Objective 10, page 14)

The arrector pili muscle is a ____ muscle that, when contracted, results in _____. (Learning Objective 9, page 14)

An anticodon is located on a molecule of _____. (Learning Objective 19, page 11)

Which of the following is a dorsal body cavity? (Learning Objective 12, page 4)

Oxygen-18 and oxygen-16 are useful in studying past climates because ________.

Which river has the greatest discharge of any stream on Earth?

Rates of groundwater flow are ________ than stream flow because the water ________.

Iceland is one of the few places in the world that is both above sea level and situated atop a ________ plate boundary.

Compared to oceanic crust, continental crust is ________.

The distinction between the crust and the mantle is primarily on the basis of a difference in ________; the distinction between the lithosphere and the asthenosphere is primarily on the basis of a difference in ________.