A key target in our radio telescope search for exoplanets harboring life is:
A) ozone because it is produced from oxygen and easy to detect in the infrared part of the spectrum.
B) silicon because it is one of the most abundant elements on Earth and also a possible candidate as a base for biological molecules.
C) carbon because our life-forms are based on carbon.
D) iron because advanced civilizations are hard to imagine without it.
Correct Answer:
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