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.
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Important Questions from Climatology
In which of the following atmospheric layers ozone gas is concentrated?
Ozone layer depletion is a major phenomenon in :
By which layer of the atmosphere the ultra-violet rays are absorbed ?
The layer of very rare air above the mesosphere is called the _____________.
Air moves from the region where the air _______.
