A. Oxygen
B. Nitrogen
C. Hydrogen
D. None of these
Explanation
- The most abundant gas in Earth’s atmosphere is Nitrogen, making up about 78% of the air.
- It is a colorless, odorless, and mostly inert gas.
- Nitrogen is essential for plant growth but not directly usable by humans.
🧠 Explanation:
Nitrogen is the most abundant gas in Earth’s atmosphere, making up about 78%. This fact is a key topic in earth science, engaging students and environmentalists. Understanding nitrogen’s dominance clarifies atmospheric composition, relevant for studying weather and climate. Its prevalence attracts those exploring environmental science, highlighting its role in air quality, plant growth, and ecological balance, making it essential for understanding Earth’s environmental systems and sustainability.
