Looking back at the Absorption Spectrum, which of these gasses are greenhouse gasses?

Question

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In the context of an absorption spectrum and greenhouse gases, several gases are known to trap infrared radiation in the atmosphere, leading to warming effects.
Option 1: Water Vapor (H2O) — Water vapor is a major greenhouse gas and contributes significantly to the natural greenhouse effect by absorbing infrared radiation across a broad range of wavelengths.
Option 2: Methane (CH4) — Methane is a potent greenhouse gas with strong absorption in infrared bands, though it is present in smaller amounts than water vapor, its global warming potential is high.
Option 3: Carbon Dioxide (CO2) — CO2 is a well-established greenhouse gas, absorbing IR radiation in key bands and contributing to atmospheric warming as its concentration rises.
Option 4: Nitrous Oxide (NO2) — Nitrous oxide (often referred to as N2O in the context of greenhouse gases) is another greenhouse gas with infrared absorption capabilities that contribute to the greenhouse effect, albeit in smaller quantities than CO2 or CH4.
Option 5: All of these — Since water vapor, methane, carbon dioxide, and nitrous oxide all act as greenhouse gases by absorbing infrared radiation and contributing to warming, this statement is true. In the absorption-spectrum context, each listed gas participates in IR absorption, reinforcing why the combined set is greenhouse-active.

F25 MET D010L 65Z Meteorology Lab Investigation2 Quiz

Looking back at the Absorption Spectrum, which of these gasses are greenhouse gasses?

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