Across
- 3. virus that attacks the immune system
- 6. organism that eats dead things
- 8. abnormal cell growth
- 9. organism that receives energy from the sun and performs photosythesis
- 11. substance used to kill annoying organisms
- 12. difference in the sequence of genes between individuals
- 13. nucleic acid that holds all genetic information
- 14. reproductive cell
- 15. process by which a branch species is created
- 16. role of a species in an ecosystem
- 18. to burn something
- 20. variety of organisms in an area
Down
- 1. refers to something that isn't alive and never has been
- 2. cells commit suicide to make sure they don't reproduce
- 4. group of organisms that can interbreed
- 5. equilibrium maintained within an organism
- 7. physical or behavioral change to help an organism be more successful
- 10. an organism's ability to survive
- 17. study of interactions between organisms
- 19. refers to something that is alive or has lived