Correct option is C
The correct answer is: (C) Nitrogen
Explanation:
Nitrogen (N₂) makes up approximately 78% of Earth's atmosphere and plays a crucial role in the nitrogen cycle, which is essential for life. It is a key component of amino acids, proteins,
Nitrogen (N₂) makes up approximately 78% of Earth's atmosphere and plays a crucial role in the nitrogen cycle, which is essential for life. It is a key component of amino acids, proteins,
DNA, and RNA, making it vital for all living organisms. Although nitrogen is abundant in the atmosphere, most organisms rely on nitrogen-fixing bacteria to convert it into a usable form.
Information Booster:
Additional Information:
- Nitrogen cycle involves processes like nitrogen fixation, nitrification, and denitrification, maintaining balance in ecosystems.
- Plants absorb nitrates and ammonium from soil for growth, which herbivores and carnivores acquire through food chains.
- The atmosphere is 78% nitrogen, 21% oxygen, and 1% other gases.
- Nitrogen is inert and non-reactive under normal conditions, preventing spontaneous combustion of oxygen-rich air.
- Industrially, nitrogen is used in fertilizers, explosives, and refrigeration.
- Carbon : Present in CO₂, which makes up only 0.04% of the atmosphere and is crucial for photosynthesis.
- Helium : A noble gas that is light and non-reactive, used in balloons and cryogenics.
- Oxygen : Makes up 21% of the atmosphere, essential for respiration and combustion .
English
100 Questions
100 Marks
90 Mins
