Multiple Choice
Based on what you know of the Earth's evolution,what percent of Earth-like planets in a star cluster with an age of 2 billion years has intelligent life?
A) 0
B) 10 percent
C) 30 percent
D) 50 percent
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q30: SETI's Allen Telescope Array is designed to
Q31: The habitable zone for a <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4068/.jpg"
Q33: We search for intelligent life in the
Q34: The four main chemicals of which life
Q35: Complex microorganisms that have complex DNA enclosed
Q36: If a mutation occurred and spawned a
Q38: Calculate the maximum likelihood that any technically
Q40: What occurred approximately 500 million years ago?<br>A)
Q43: Why would the 21-cm line be a
Q58: As living organisms evolved to become more