________ is a thin surface layer of closely packed pebbles found in deserts.
A. A pediment
B. A mesa
C. Desert pavement
D. A barchan
E. Desert varnish
Answer: C
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The pH scale is a quantitative representation of the relative amounts of ________
A) water and carbon dioxide molecules in solution B) hydrogen and polar water molecules in solution C) alkaline and basic ions in solution D) hydrogen and oxygen ions in solution E) hydrogen and hydroxyl ions in solution
What are Earth's structural spheres?
A) centrosphere, geosphere, biosphere, and atmosphere B) geosphere and atmosphere C) lithosphere, biosphere, and atmosphere D) lithosphere, hydrosphere, biosphere, and atmosphere E) lithosphere, hydrosphere, and atmosphere
Which one of the following is the best example of circulation?
A) visiting a university in a distant state in order to determine whether it best suits your needs as a prospective college student B) taking your car to the mechanic because its transmission stopped functioning after six years of use C) going to the grocery store once every two or three weeks to stock up on food and supplies D) going to a grocery store to buy supplies for your friend's sixteenth birthday party E) visiting a famous national park for the first time in your life
Which of the following is true regarding glycogen depletion during vigorous exercise?
A) Exercise does not affect glycogen supplies. B) Glycogen is depleted rapidly and at equal rates from the muscle and the liver. C) Glycogen is first depleted from the liver and then from the muscles. D) Glycogen is first depleted from the muscles and then from the liver.