Across
- 2. an inherited trait that increases an organisms chance of survival and reproduction
- 6. __________ Isolation- physical barrier divides a population so that can no longer mate. evolve different genes so they can no longer product fertile offspring.
- 8. Natural _________ - organisms best suited for their environment as a result of good genes survive and reproduce; survival of the fittest
- 9. The theory that life can only come from other life.
- 10. __________ Theory - scientists believe that prokaryotes became the chloroplasts and mitochondria of eukaryotes.
- 15. ______ Resistance - bacteria that doesn't respond to antibiotics.
- 19. Resistance - an insect that doesn't respond to pesticides.
- 20. the ability of an organism to survive and reproduce in its environment.
Down
- 1. an adaptation that allows a species to blend in with its surroundings so predators cannot see it.
- 2. Theory that life can develop without other life; spontaneous generation
- 3. Dating scientists tell exactly how old a fossil is by what its made of (radiometric dating)
- 4. change over time; Variation,Selection,Inheritance,Time
- 5. an organism in early stages of development.
- 7. Remains of the once lived
- 11. The process where a new species evolve; infertile
- 12. Traits passed on
- 13. individuals with good traits survive and reproduce more
- 14. difference between individuals
- 15. Common _________ - the species that 2 species evolved from
- 16. a group or organisms that can interbreed (mate) and produce fertile(able to have children) offspring
- 17. Many Generations
- 18. Dating scientists determine which fossils are oldest by comparing the order they are in.