Atmosphere Gas Identification
The question asks to identify the gas that constitutes 78% of the Earth's atmosphere and is also a vital component of molecules essential for life.
- Nitrogen (N2): This gas makes up approximately 78% of the Earth's atmosphere. It is also a fundamental element in many biological molecules, including amino acids (building blocks of proteins) and nucleic acids (like DNA and RNA).
- Oxygen (O2): While crucial for respiration and life, Oxygen only makes up about 21% of the atmosphere.
- Carbon (C): Carbon is the backbone of all organic life but exists in the atmosphere mainly as carbon dioxide (CO2), which is less than 1% (around 0.04%).
- Helium (He): This is an inert gas found in trace amounts in the atmosphere and is not directly essential for most life processes in the same way nitrogen is.
Based on the analysis, Nitrogen is the gas that meets both criteria: it comprises 78% of the atmosphere and is a key component of essential biological molecules.
Similar Questions
- What is the low-pressure belt near the equator commonly known as?
- Which of the given layer of the atmosphere has the lowest density?
- Which of the following statements is CORRECT about El Nino?
- What do we call the force which affects the direction of wind and is caused by the rotation of the earth on its axis?
- From which language is the word 'El-Nino' derived?
- The word 'Mausim' (referring to 'monsoon') comes from which of the following languages?
- Which of the following represents the correct order of occurrence of the layers of the atmosphere, starting from the surface of the earth?
- Which of the following statements is correct regarding the Aurora Borealis?
Tropical cyclones form mainly due to:
Which of the following does NOT influence the horizontal distribution of air pressure?
Important Questions from Climatology
In which of the following atmospheric layers ozone gas is concentrated?
Ozone layer depletion is a major phenomenon in :
Starting from Earth's surface, the right sequence is-
I. Stratosphere
II. Troposphere
III. Ionosphere
IV. Mesosphere
By which layer of the atmosphere the ultra-violet rays are absorbed ?
______ is the uppermost layer of the atmosphere.
