Natural selection

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Across
  1. 4. an event or process that leads.
  2. 5. a trait that makes it more likely that an individual will survive in a specific environment.
  3. 6. a characteristic that all members of a species have.
  4. 8. a way of hiding by looking the same as the background.
  5. 10. a long piece of DNA that contains many genes.
Down
  1. 1. everything (living and non-living) that surrounds an organism.
  2. 2. a type of molecule that genes and chromosomes are made of.
  3. 3. the number of individuals with each trait in a population.
  4. 7. a result or change that happens because of an event or process.
  5. 9. a related organism from a previous generation.