Crossword day 7

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Across
  1. 4. - A system where individuals are ranked in levels of importance
  2. 5. - An area that an animal claims as its own
  3. 7. - The act of meeting basic survival needs
  4. 9. - A flat, cold region with no trees
  5. 10. - Changes that help an organism survive in its environment
Down
  1. 1. - Being alone or separated from others
  2. 2. - The ability to learn, understand, and solve problems
  3. 3. - The act of finding and catching animals for food
  4. 6. - A shelter or home for animals
  5. 8. - Communication or action between individuals