Natural Selection

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Across
  1. 2. the name of Charles Darwin's ship
  2. 10. describes how a population changes over time
  3. 11. the type of reproductive isolation where groups are separated by thier actions
  4. 13. how well an organism can survive and reproduce in their environment
  5. 14. organs or structures that don’t have any useful function or are no longer used for their original purpose.
  6. 15. structures that have the same function, but are not similar in origin or shape.
  7. 16. the process by which organisms with variations most suited to their local environment survive and leave more offspring.
  8. 17. the type of reproductive isolation where groups are separated by physical barriers
  9. 18. the study of the distribution of organisms around the world.
  10. 19. the formation of a new species
Down
  1. 1. evolution toward similar characteristics in different species
  2. 3. humans selecting natural variations in plants and animals that they find useful.
  3. 4. Any heritable characteristic that increases an organism’s ability to survive and reproduce
  4. 5. when closely related species evolve in different directions and become increasingly different.
  5. 6. traits altered by an individual during their lifetime
  6. 7. the type of reproductive isolation where groups are separated by time.
  7. 8. structures are features that are similar in structure but appear in different organisms with different
  8. 9. explanation of the natural world that is well supported by evidence
  9. 12. the process by which two species evolve in response to changes in each other over time