* Matter refers to the physical substance that makes up our bodies, including:

* Atoms: The building blocks of all matter, such as carbon, hydrogen, oxygen, nitrogen, etc.

* Molecules: Combinations of atoms, like water (H2O) and proteins.

* Cells: The basic units of life, containing all the essential components for life.

* Tissues: Groups of similar cells that work together, like muscle tissue or nervous tissue.

* Organs: Structures composed of different tissues working together for a specific function, like the heart or brain.

* Organ systems: Groups of organs that work together, like the circulatory system or the digestive system.

* Energy is the ability to do work. It is essential for all life processes, such as:

* Metabolism: The chemical reactions that occur within our bodies to sustain life.

* Movement: The ability to contract muscles and move.

* Growth and repair: The processes that allow our bodies to develop and heal.

* Thinking and feeling: The complex processes that allow us to experience the world and make decisions.

So while we can break down the physical components of the human body, it is important to remember that humans are also complex beings with a unique combination of matter and energy that allows us to think, feel, and interact with the world around us.