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    Astronomy Today Study Set 1
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    Exam 28: Life in the Universe: Are We Alone
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    According to Our Definition, We Have Been a Technological Civilization
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According to Our Definition, We Have Been a Technological Civilization

Question 79

Question 79

Multiple Choice

According to our definition, we have been a technological civilization for about:


A) 1000 years.
B) 10,000 years.
C) 100 years.
D) 10 years.
E) 500 years.

Correct Answer:

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