atmospheric composition

Earth's atmosphere is a mixture of gases that surrounds the planet, essential for life. It is primarily composed of about 78% nitrogen and 21% oxygen, which we breathe to sustain life. The remaining 1% includes argon, carbon dioxide, neon, helium, methane, and other trace gases. The atmosphere also contains water vapor, which varies in amount and influences weather and climate. These gases form layers that protect us from harmful solar radiation, regulate temperature, and enable the water cycle. Overall, the atmosphere acts as a life-supporting envelope, balancing gases vital for ecosystems and climate stability.