Scientific specimens are samples of biological, geological, or chemical materials collected for research and study. These specimens can include plants, animals, minerals, or even cells, and they help scientists understand the natural world. By examining these samples, researchers can learn about species, ecosystems, and various processes in nature. Specimens are often preserved in specific ways to maintain their condition for analysis. For example, herbarium specimens are dried plants mounted on sheets, while fossils are preserved remains of ancient organisms. Proper collection and preservation techniques are essential for accurate scientific investigation and discovery.