Across
- 2. too big, small, or complicated to work with
- 4. a group of things that affect each other and function as a whole
- 6. the hard parts inside many animals that help give their bodies shape
- 9. all of the bones of an animal, including humans
- 10. the specific form and shape of something
- 12. a large muscle in the upper arm
- 13. what something does
Down
- 1. a part of the body where two bones come together and can bend
- 3. to take something apart to study it
- 5. a part of the body that attaches to bones and allows the body to move
- 7. to pay close attention to something
- 8. a pretend version of something that scientists use when the real thing
- 11. a part of the body that attaches muscle to bone