The Lizard Games

1234567
Across
  1. 5. Growth
  2. 6. Study of genes
  3. 7. The great dying of a species
Down
  1. 1. Study of evolutionary history
  2. 2. Natural or Artificial
  3. 3. Early type of plant or animal
  4. 4. Formation of new species
  5. 7. Process of change from preexisting forms