What is the basis for considering both CO₂ and water vapour as greenhouse gases?
Answer and explanation
Correct answer: Both can absorb longwave heat emitted by Earth
The governing concept is selective absorption of terrestrial longwave radiation. After absorbing sunlight, Earth emits energy mainly as infrared radiation. Carbon dioxide and water vapour absorb portions of these wavelengths and re-emit energy, including some back toward the surface, thereby influencing the planet’s energy balance. They are gases, not dust particles or sea salts, and neither is defined by producing oxygen. Therefore option A gives the correct common basis.
Frequently asked questions
What is the correct answer to this question?
Both can absorb longwave heat emitted by Earth
Why is this the correct answer?
The governing concept is selective absorption of terrestrial longwave radiation. After absorbing sunlight, Earth emits energy mainly as infrared radiation. Carbon dioxide and water vapour absorb portions of these wavelengths and re-emit energy, including some back toward the surface, thereby influencing the planet’s energy balance. They are gases, not dust particles or sea salts, and neither is defined by producing oxygen. Therefore option A gives the correct common basis.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting. Topic: Accounting Information.
