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This quiz consists of 5 multiple choice and 5 short answer questions through Chapters III-IV.

Multiple Choice Questions

1. When Lyell spoke in Boston, how many people tried to get tickets?
(a) More than 4,000.
(b) 2,500.
(c) About 5,000.
(d) 3,500.

2. Who first proposed that there had been five great mass extinctions during the history of life on Earth?
(a) Smythe and Brandenburg.
(b) Wake and Vredenburg.
(c) Roberts and Whitman.
(d) Andrews and Pierson.

3. Worldwide, how many amphibians species had been identified?
(a) 3,500.
(b) About 5,000.
(c) Just over 7,000.
(d) 4,500.

4. In 1984, where were grains of shocked quartz found in a layer of clay?
(a) Wyoming.
(b) Colorado.
(c) Western Utah.
(d) Eastern Montana.

5. Where was the first clue discovered as to what was killing off frogs around the world?
(a) Scientific expedition to Brazil.
(b) San Diego Zoo.
(c) Scientific expedition to Chile.
(d) National Zoo in Washington D.C.

Short Answer Questions

1. When the Alvarezes published their hypothesis, how many sites did they know of where the iridium layer was exposed?

2. How wide was a volcanic crater mentioned by the author in Chapter I?

3. When was the last auk killed?

4. What did the call of the horned marsupial frog sound like?

5. When did Alvarez get a job at Berkeley?

(see the answer key)

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