1. Multicellularity: They are composed of multiple cells that are specialized for different functions.
2. Tissues: Their cells are organized into tissues, which are groups of similar cells that perform a specific function.
3. Differentiation: Their cells are differentiated, meaning that they have specialized adaptations for their specific functions.
4. Development: They undergo development, which is the process of growth and change from an embryo to an adult.
5. Reproduction: They reproduce, which is the process of creating new individuals.
6. Adaptation: They adapt to their environment, which is the process of changing in order to survive in a particular environment.