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13. What is the most abundant gas in the Earth's atmosphere?​

Sagot :

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The most abundant gas in the Earth's atmosphere is nitrogen, which makes up about 78% of the atmosphere.

Importance of Nitrogen

  • Stability - Nitrogen is relatively inert, meaning it doesn't easily react with other substances. This stability helps maintain a consistent atmosphere and prevents rapid changes in air composition.
  • Biological Processes - Nitrogen is essential for life. It is a key component of amino acids, proteins, and DNA. Although atmospheric nitrogen is not directly usable by most organisms, it is converted into usable forms through the nitrogen cycle, involving processes like nitrogen fixation by bacteria.
  • Combustion Control - The presence of nitrogen helps to dilute oxygen in the atmosphere, reducing the risk of spontaneous combustion and making fires more manageable.

Answer:

Importance of Nitrogen

Stability - Nitrogen is relatively inert, meaning it doesn't easily react with other substances. This stability helps maintain a consistent atmosphere and prevents rapid changes in air composition.

Biological Processes - Nitrogen is essential for life. It is a key component of amino acids, proteins, and DNA. Although atmospheric nitrogen is not directly usable by most organisms, it is converted into usable forms through the nitrogen cycle, involving processes like nitrogen fixation by bacteria.

Combustion Control - The presence of nitrogen helps to dilute oxygen in the atmosphere, reducing the risk of spontaneous combustion and making fires more manageable.

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