Across
- 2. A group of tissues that serve a specific function
- 3. A system in our body that is responsible for sending messages to different parts of the body
- 5. A single celled organism you need a microscope to see
- 6. A system in our body that helps break down food
- 9. The building blocks of life
- 10. Made up of multiple cells
Down
- 1. Made up of a single cell
- 4. A system in our body that helps keep us upright
- 7. This is formed when many cells are grouped together
- 8. A system in our body that helps us breathe