There are various types of living organisms, including animals, plants, fungi, and microorganisms. Each type plays a unique role in the ecosystem. For example, animals can be classified into mammals, birds, reptiles, amphibians, and fish, while plants can be divided into flowering and non-flowering species. In addition to biological classifications, there are various types of materials, such as metals, plastics, and textiles. Each material has distinct properties and uses. For instance, metals are often used in construction and manufacturing, while plastics are commonly found in packaging and household items.