< 🌱 The Nitrogen Cycle Explained: Nature’s Hidden Recycling System 1. Introduction: Why the Nitrogen Cycle Matters Every breath you take and every bite of food you eat is connected to nitrogen. It’s an element so common we often overlook it, yet it makes up 78% of the air around us . But here’s the catch: the nitrogen in the air isn’t directly usable by most living things. Instead, it needs to go through a natural recycling system called the nitrogen cycle . This cycle is one of the most important life-support systems on Earth, keeping soil fertile, ecosystems balanced, and food chains aliv...