There is no life in moon because it has no __________.

Correct option is D

The correct answer is: (d) Water

Explanation: The Moon does not support life primarily because it lacks water, which is essential for all known forms of life. Water is crucial for biochemical reactions, and its absence on the Moon makes it inhospitable to life as we understand it.

• Water's Role in Life: Water is a solvent and medium for chemical reactions in cells, making it essential for life processes like metabolism and cellular function.

• Moon's Harsh Environment: The Moon lacks a significant atmosphere and water, and its surface experiences extreme temperature fluctuations, further making life unsustainable.

• Presence of Water on Earth: Earth’s water-based environment is why life flourished here, unlike on the Moon.

• Search for Water: Space agencies like NASA have been focusing on discovering water ice on the Moon and other planets, as it might make future human colonization possible.

• No Liquid Water: The Moon's water is present only in the form of ice, typically in permanently shadowed craters at the poles, but it's not in a form conducive to supporting life.

• (a) Nitrogen: Nitrogen is a vital element for life on Earth, especially in amino acids and proteins, but its absence on the Moon is not the primary reason for the lack of life.

• (b) Sulphur: While sulphur plays a role in biological systems, particularly in the formation of proteins, it is not a critical missing factor for the possibility of life on the Moon.

• (c) Oxygen: Oxygen is essential for respiration in many life forms, but life could theoretically exist without oxygen in anaerobic environments. The key issue for life on the Moon is the absence of liquid water.