Across
- 6. The respiratory system takes up oxygen from the air we breathe and expels the unwanted carbon dioxide
- 8. The energy of a moving object
- 9. The organs that take in food and liquids and break them down into substances that the body can use for energy, growth, and tissue repair.
- 10. the smallest unit of life
Down
- 1. Energy that is stored
- 2. The standard unit of energy
- 3. A group of similar cells that work together
- 4. A push or pull upon an object resulting from the object's interaction with another object.
- 5. The circulatory system delivers oxygen and nutrients to cells and takes away wastes
- 7. A structure in a cell that performs a particular function