Q: The Earth in its initial phases of formation was a hot object with a thin layer of atmosphere comprising
(a)oxygen and nitrogen
(b)hydrogen and helium
(c)carbon dioxide and nitrogen
(d)argon and methane
Correct Answer: (c)
The correct answer is (c): carbon dioxide and nitrogen. Subject: Environment & Ecology | Sub-topic: Climate Change & Greenhouse Gases Note: This answer was determined through AI-based research. Verify against the official answer key when available.