- A. Carbon
- B. Hydrogen
- C. Nitrogen
- D. Water
The Correct Answer is: D
Explanation
The answer is D. Water.
While all the options (Carbon, Hydrogen, and Nitrogen) are essential for life as we know it, the lack of water is the primary reason why life is absent on the moon. Water is a crucial component for biological processes and plays a vital role in the formation and structure of living organisms.
Here’s a breakdown of why the other options aren’t the primary reason:
Carbon: Carbon is a fundamental building block of life on Earth, but there might be some carbon-containing molecules present on the moon.
Hydrogen: Hydrogen is another abundant element in the universe, and some evidence suggests the presence of water ice on the moon in permanently shadowed craters.
Nitrogen: Nitrogen is another essential element for life, but similar to carbon, its absence isn’t the main roadblock for life on the moon.
The lack of water, combined with the moon’s harsh environment with extreme temperatures, a thin atmosphere, and radiation exposure, makes it unsuitable for life as we understand it.
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