Drought resistance refers to the ability of plants, animals, and ecosystems to survive and thrive in conditions of limited water availability. This adaptation can involve various physiological and biochemical mechanisms that help organisms conserve water, such as deep root systems or specialized leaf structures. In agriculture, developing drought-resistant crops is crucial for food security, especially in regions prone to drought. Scientists often use techniques like selective breeding or genetic modification to enhance these traits in crops like maize and wheat, ensuring they can withstand prolonged dry periods while maintaining yield.