Across
- 2. how an organism makes a living
- 4. an organism that gets killed and eaten by another organism
- 6. close relationship between 2 species that benefits at least of them
- 9. gradual process where the best traits become common in a species over time
- 10. behaviors and characteristics that allow an organism to survive
Down
- 1. the struggle over resources
- 3. a symbiotic relationship that benefits 1 species and doesn't affect the other
- 5. a symbiotic relationship that benefits BOTH species
- 7. a symbiotic relationship that benefits 1 species and HURTS the other
- 8. an organism that kills and eats another organism