Biology: Evolution Puzzle

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Across
  1. 1. The gradual process by which something changes into a different form
  2. 3. The amount or count in a certain areal of a species
  3. 4. A method of blending into an environment
  4. 7. The evolution by which new species are formed
  5. 8. The process by which certain traits make it more possible for an organism to survive
Down
  1. 1. The end of a species
  2. 2. biodiversity
  3. 5. When a population becomes better suited to its habitat
  4. 6. Ability of an organism to survive
  5. 9. A group of a type of organisms or animals