Across
- 3. negative particle in an atom
- 5. air is an example of a...
- 8. type of digestion the teeth does
- 9. this element has the electron arrangement of 2,1
- 10. the gas we need to inhale
- 11. symbol for calcium
- 12. dietary requirement broken down into amino acids
- 14. element symbol N
- 16. system functions to protect against infection
- 19. acronym for the life processes
- 21. a charged particle
- 22. main organ of the nervous system
- 23. main organ of the respiratory system
- 25. the number of organ systems in the human body
Down
- 1. removal of waste from the body
- 2. system that moves blood around the body
- 4. process of using glucose to make energy
- 6. two or more different elements chemically bonded
- 7. type of digestion using chemicals and enzymes
- 13. when an element loses electrons it becomes..
- 15. element found in red blood cells
- 17. symbol for lead
- 18. the gas we exhale as a waste product
- 20. main organ in the integumentary system
- 24. the building blocks of life