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25-04-2024
Biology

Answered

Which of the following is a biomarker that could be used from an observatory around a nearby star, with the right equipment, to identify Earth as a planet with life?
A) The presence of a large moon around Earth
B) The fact that most of our atmosphere is made of nitrogen
C) Free oxygen in Earth's atmosphere
D) The abundance of micro-organisms in the deserts of Earth

Answer :

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