biology

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Across
  1. 6. What is it when no more individual of a species left in the world?
  2. 8. Relating to the natural world and the impact of human activity on its condition for example: Acid rain may have caused major environmental damage?
  3. 9. What is a section of DNA which contains the information for a characteristic?
  4. 10. What is it when an organism needs to survive in its environment?
  5. 12. Differences in characteristic within a species?
Down
  1. 1. What is a long strand of DNA which contains many genes?
  2. 2. What is it when an organism has a lot of characteristic in common and can mate and have a fertile offspring?
  3. 3. What is it when a person receives (money, property, or a title) as an heir at the death of the previous holder called?
  4. 4. What is a development in a species over time called?
  5. 5. What is the name of a plant and animal that has turned to stone?
  6. 7. Competing with other organisms for resources?
  7. 11. What is called when a long molecule made up of twisted strands of the bases A, T, C and G?