Correct option is A
E. Hydrogen: Hydrogen is present in trace amounts in the atmosphere, approximately 0.00005%. It is the least abundant gas in Earth's atmosphere.
A. Carbon Dioxide: Carbon dioxide constitutes about 0.04% of the Earth's atmosphere. Though it is a small percentage, it plays a significant role in the greenhouse effect.
B. Argon: Argon is present in much larger quantities than carbon dioxide, making up about 0.93% of the atmosphere. It is a noble gas and is chemically inert.
D. Oxygen: Oxygen accounts for approximately 21% of the atmosphere, which is essential for respiration and combustion.
C. Nitrogen: Nitrogen is the most abundant gas in the atmosphere, comprising about 78% of the air.
Thus, the gases in increasing order of their volume are:
Hydrogen (E) < Carbon Dioxide (A) < Argon (B) < Oxygen (D) < Nitrogen (C).
Therefore, the correct answer is (1) E, A, B, D, C.
Earth’s Atmospheric Composition:
The Earth's atmosphere is primarily composed of nitrogen (N₂) (78%) and oxygen (O₂) (21%).
Argon (Ar), a noble gas, accounts for approximately 0.93%.
Carbon Dioxide (CO₂) makes up 0.04% of the atmosphere but plays a crucial role in Earth's climate system, particularly in the greenhouse effect.
Hydrogen (H₂) is the lightest and most abundant element in the universe but exists only in trace amounts on Earth, making up about 0.00005% of the atmosphere.
Role of Nitrogen:
Nitrogen is inert and makes up the majority of the Earth's atmosphere. It is critical in biological processes such as the formation of amino acids and proteins, even though it doesn't directly participate in respiration.
Significance of Carbon Dioxide:
CO₂ has a small volume in the atmosphere but is a potent greenhouse gas. Its increase in the atmosphere due to human activity has been linked to global warming and climate change.
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