Mô hình xương rồng (cactus)

A cactus is a hardy, spiky plant adapted to survive in arid environments. Its thick, fleshy stems store water, allowing it to thrive in deserts where rainfall is scarce. The plant is covered in sharp spines, which protect it from herbivores and help to reduce water loss by limiting air flow around the surface. Cacti come in various shapes and sizes, from tall, columnar forms like the saguaro to small, round species like the barrel cactus. Their vibrant flowers, which bloom infrequently, often display bright colors like red, yellow, or pink.