Across
- 4. A structure composed of two or more tissue types that performs a specific function for the body
- 5. Tiny building blocks of matter
- 7. The smallest units of all time
- 9. The ability to sense changes in the environment and then to react to them
- 10. System A group of organs that work together to accomplish a common purpose
Down
- 1. A study of the structure or internal workings of something
- 2. System The external covering of the body, or the skin
- 3. The way in which living organisms or bodily parts function
- 6. Represents the highest level of structural organization
- 8. A group of similar cells that have a common function