The Nitrogen Cycle

This study guide covers the nitrogen cycle, including why nitrogen is important as a macronutrient and limiting nutrient. It details the cycle's key steps: nitrogen fixation, nitrification, assimilation, mineralization, and denitrification, emphasizing the role of bacteria. The guide also explains human impacts like fertilizer overuse, eutrophication, and effects on species richness. Finally, it provides practice questions and exam tips.