Across
- 1. all organisms of one type
- 4. distance around outside of a polygon
- 7. middle of the earth
- 8. sort things into groups
- 11. nuclei reform, cell plate forms
- 13. made up of proteins and dna
- 16. animals with legs that bend
- 18. makes proteins in the cell
- 20. substance of which something is made
Down
- 2. fractured pieces of the earth's crust
- 3. lines that never intersect
- 5. animals without a backbone
- 6. part of earth where there is life
- 9. simplest nonflowering plants
- 10. shaking of the earth
- 12. lines that intersect
- 14. nuclear division
- 15. letter that takes a number's place
- 17. groups of specialized cells
- 19. angle greater than 90 and less than 180