Across
- 1. principle stating that all organisms living/extinct originate from common ancestors
- 3. members of each species compete for recources
- 6. inherited charcteristics that increase an organism's survival chance
- 7. structure having different mature forms but,same embryonic tissue
- 8. Darwins evidence of evolution
- 10. this results in changes of inherited characteristics of a population increasing fitness over time
- 11. nature provides variation, while humans select usefull variations
Down
- 2. organisms produced by natural selection having different structures,niches or inhabiting other habitats
- 4. what did Darwin call the ability of an individual to survive and reproduce
- 5. individuals that are suited to their enviroment with the ability to survive/reproduce successfully
- 9. organs reduced to the point in which they're just traces of homologous organs