Darwin and his theory

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Across
  1. 3. a change in organisms that help it survive and reproduce
  2. 5. change over time
  3. 7. selection process by which humans put organisms with certain characteristics together to get an offspring with both genetics
  4. 8. any differences between an organism of the same species
Down
  1. 1. a group of similar organisms
  2. 2. preserved remains of a dead organism
  3. 4. selection individuals more adapted to their environment are more likely to survive and reproduce
  4. 6. theory a well-tested concept that explains something not proven to be fully true