The habitat in which you would find a cactus is typically a desert. Cacti are well-adapted to arid environments and have evolved unique features such as thick, fleshy stems for storing water and spines for protection against herbivores. Deserts, characterized by low rainfall, extreme temperatures, and minimal vegetation, provide the ideal conditions for various cactus species. These plants are crucial for their ecosystems, offering habitats for wildlife and contributing to the desert's biodiversity. Cacti can also thrive in rocky or sandy soils, demonstrating adaptability to challenging environments.