Riddle

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Across
  1. 3. What is always in front of you but can't be seen?
  2. 4. Whatstarts with "p" and ends with "orn" and is really popular in the movie industry, what am i?
  3. 5. I create my lair with earthen string, and dispatch my prey with a biting sting?
  4. 6. If i surround you, i can kill you. what am i?
  5. 8. The more you take, the more you leave behind. what am i?
Down
  1. 1. What can you break, even if you never pick it up or touch it?
  2. 2. I fly without wings, i cry without eyes?
  3. 3. It's not alive but it grows. it's doesn't have lungs, but it needs air. it's doesn't have a mouth, but wather kills it?
  4. 7. What can run, but never walks?
  5. 9. Moving silently from hill to hill?