SPACE

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Across
  1. 5. a forest in its natural state, before it has been explored or exploited by humans.
  2. 6. a very large city, often the most important city in a large area or country
  3. 7. a very large city, especially one with more than 10 million people living in it
  4. 8. the concept of living or establishing human settlement outside of Earth
  5. 10. refers to a planet that is located a great distance away from a specific reference point or context
Down
  1. 1. a city area containing a large number of people, formed by various towns growing and joining together
  2. 2. all the plants of a particular place
  3. 3. until now or until the point in time under discussion.
  4. 4. A region of space between the orbits of Mars and Jupiter, where many asteroids are found
  5. 9. all the animals that live wild in a particular area