According to our definition, we have been a technological civilization for about
A) 10,000 years.
B) 1000 years.
C) 100 years.
D) 10 years.
E) 500 years.
Correct Answer:
Verified
Q47: How does Drake define a technological civilization?
A)
Q48: Which of the following appears least important
Q49: Why do we feel type O and
Q50: What is meant by the "habitable zone"?
A)
Q51: Organic molecules are
A) silicon- based.
B) carbon- based.
C)
Q53: Large molecules found in meteorites and interstellar
Q54: Which of the following appears most favored
Q55: The Drake Equation is attempting to find
A)
Q56: What encouragement for life on Mars came
Q57: Which type of molecules, vital to our
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