In Interstellar Space,millions of Ice-Encrusted Dust Particles Contain Simple Carbon-Containing

question 28

Multiple Choice

In interstellar space,millions of ice-encrusted dust particles contain simple carbon-containing compounds.When particles like these are exposed to solar radiation,more complex organic molecules form on the surfaces of the dust.What is the significance of these findings?

• A)Chemical evolution occurs only in outer space and was not possible on Earth.
• B)Life began in outer space.
• C)Life exists in outer space.
• D)Chemical evolution can occur in outer space.

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