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which of the following appears most favoured by natural selection |
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how long between the evolution of single VS multicellular organisms |
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the drake equation is attempting to find |
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the number of technological civilizations in the galaxy at a given moment |
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what important molecules of life did miller and urey brew up |
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how long ago did multicelular life forms appear in the fossil record |
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according to our definition we have being a technological civilization for about |
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the simplest life forms appeared on earth when it was how old |
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large molecules found in meteorites and interstellar clouds is evidence that |
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chemical evolution has taken place elsewhere in the universe |
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why do we feel type O and B tars are poor candidates for extra-terrestrial life |
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their lifetime is too short |
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which jovial moon has gotten the most attention from exobiologits |
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most SETI searches are done at |
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which of these radio waves would fall in the water hole |
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assuming for life the conditions ripe for life and intelligence abound in the galaxy , what factors limit the number of galactic civilizations |
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the average survival time of the civilization |
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in drakes equation, which of the following is the closest estimate for the number of stars that are formed in the milky way |
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