Across
- 2. Blood cell that fight desease
- 5. A system that balances water and removes waste
- 6. energy that is stored
- 11. Moist and cold air mass
- 12. A front where cold air moves in under a warm air mass
- 13. A dark cloud whose name means rain
- 14. A cell structure which substances can enter and leave
- 15. Made of one single cell
- 16. ForcexDistance
- 17. The control center of the cell
- 19. The condition of the air based of pollution
- 20. carries blood to the heart
Down
- 1. The amount of water vapor in the air
- 3. A group of tissues that perform a specialized function in the body
- 4. Pattern of wind caused by land forms in a particular area
- 7. when vein and artery meet
- 8. Wind that travels great distances in steady patterns
- 9. The liquid part of blood
- 10. Clouds that cover most of the sky and form in flat layers
- 18. Location of a place using longitude and latitude