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Author Question: The instrument that emits a high-frequency sound beam to measure the depth of the ocean developed in ... (Read 73 times)

soccerdreamer_17

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on: Aug 22, 2018
The instrument that emits a high-frequency sound beam to measure the depth of the ocean developed in the 1950s is the ________.
 
  A) GLORIA
  B) precision-depth recorder (PDR)
  C) Seabeam
  D) SeaMARC
  E) SeaWif

Question 2

The European Age of Discovery ended with ________.
 
  A) Christopher Columbus' discovery of the New World
  B) Ferdinand Magellan's circumnavigation of the globe
  C) Phoenician exploration of the Mediterranean
  D) Polynesian colonization of Pacific Islands
  E) Viking voyages to North America


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chem1s3

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Reply #1 on: Aug 22, 2018
Answer to Question 1

B

Answer to Question 2

B


soccerdreamer_17

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Reply 2 on: Aug 22, 2018
Excellent

jojobee318

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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