Across
- 3. the differences in features in species
- 5. created by different tissues working together
- 7. a colorless, oderless, highly flammable gas
- 9. the basic forms of all life
- 10. where an organism lives
- 15. you cannot be hurt by microbes if you have this
- 18. a body system that has to do with the lungs
- 19. a chart showing the flow of energy throughout organisms
- 20. unit of measurement and is what force is measured in
Down
- 1. a group of cells working together
- 2. the study of all life forms
- 4. animals with a backbone
- 6. controls what a cell does
- 8. a summer sleep performed by cold blooded animals
- 11. changes in the body to fit a location
- 12. what scientists use to sort organisms into groups
- 13. a type of cell division that copies the cell exactly
- 14. falls from 8-14 on the potential hydrogen scale (pH)
- 16. bacteria, viruses and fungi
- 17. a push or pull with an object of mass