Across
- 5. a gradual change in genes over time
- 6. members of a species adapt to changing conditions
- 7. your surroundings
- 8. species produce more young than can survive to adulthood
Down
- 1. an organism that reaches adulthood and reproduces
- 2. changes in a gene sequence that is not normal
- 3. members of a species who are similar and who can mate and produce fertile offspring
- 4. members of a species need to compete for limited resources
- 9. members of a species vary in their traits