Multiple Choice
Which of the following factors in the simplified Drake equation is least well known?
A) Nhp, the number of habitable planets in our galaxy
B) fcᵢᵥ, fraction of life-bearing planets where intelligent civilizations have arisen at any time
C) fnₒw, fraction of civilization-bearing planets that have intelligent civilizations on them now
D) flᵢfₑ, fraction of life-bearing habitable planets
Correct Answer:
Verified
Correct Answer:
Verified
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