IB Geography Practice Exam 2025 – The Comprehensive All-in-One Guide to Exam Success!

The practice of rotating different crops to maintain soil health is known as crop rotation and fallow periods. This agricultural method is essential because it helps to manage soil fertility and structure while disrupting pest and disease cycles. By alternating the types of crops grown in a particular area, specific nutrient demands on the soil are varied, allowing the soil to replenish certain nutrients while minimizing the depletion that arises from planting the same crop repeatedly.

For instance, leguminous crops can fix nitrogen in the soil, benefitting subsequent crops that may require nitrogen as a nutrient. Additionally, fallow periods, which involve leaving the land unused or planting cover crops, allow the soil ecosystem to recover, further enhancing its health and productivity. This method contrasts markedly with farming intensification, which focuses on maximizing yields often through chemical inputs without natural soil replenishment strategies. Single cropping does not promote the benefits of diversity in planting, and hydroponic farming, while innovative, does not involve soil and thus does not address soil health directly.