A succession of rocks bounded by unconformities:a
period d. bedding plane
b. sequence e. ecosystem
c. system
B
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What is an aerial burst?
A) an explosion in the asteroid belt that sends asteroids hurtling toward Earth B) a secondary explosion above an impact crater, occurring after impact C) a meteor bursting into many smaller pieces when bombarded with nuclear weapons D) an explosion of a meteor entering the Earth's atmosphere
Which of the following materials will react with an acid to produce a gas?
A) NaOH(aq) B) Na2CO3(aq) C) both a and b D) neither a nor b
When a factory pollutes a river, the costs and losses that affect people downstream would be called ________ costs.
A. Social B. Incidental C. External D. Internal E. Indirect
Which part of the three-cell general circulation model is associated with convection near the equator?
a. The trade cell. b. The Ferrel cell. c. The polar cell. d. The Hadley cell.