Final answer:
The correct sequence from simplest to most complex is 2-1-3-4-5.
Step-by-step explanation:
The correct sequence from simplest to most complex is 2-1-3-4-5.
- Atoms are the basic units of matter and combine to form molecules.
- Cells are the building blocks of life and are made up of molecules.
- Tissues are groups of cells that work together to perform a specific function.
- Organs are composed of tissues and have specific functions in the body.
- Organ systems are made up of organs that work together to perform a specific function in the body.