1. Atoms: The basic building blocks of matter.
2. Molecules: Two or more atoms bonded together.
3. Organelles: Specialized structures within cells that carry out specific functions (e.g., nucleus, mitochondria).
4. Cells: The basic unit of life, containing all the necessary components for life.
5. Tissues: Groups of similar cells working together to perform a specific function (e.g., muscle tissue, nervous tissue).
6. Organs: Structures made of different tissues that work together to carry out a specific function (e.g., heart, stomach, brain).
7. Organ Systems: Groups of organs that work together to perform a major body function (e.g., digestive system, circulatory system).
8. Organism: A complete living being made up of multiple organ systems.
This is a hierarchical organization, meaning each level builds upon the previous one.
