Here's a breakdown of the hierarchical organization:
1. Atoms: The basic building blocks of matter.
2. Molecules: Two or more atoms bonded together.
3. Organelles: Structures within cells that perform specific functions.
4. Cells: The fundamental unit of life, containing organelles.
5. Tissues: Groups of similar cells working together to perform a specific function.
6. Organs: Structures made up of different tissues that work together for a common purpose.
7. Organ Systems: Groups of organs that work together to carry out major bodily functions.
8. Organisms: A complete living being made up of organ systems.
So, tissues combine to form organs.