Across
- 3. Remaining the same in all cases and at all times; unchanging in form or character.
- 4. The exclusive possession or control of the supply of or trade in a commodity or service.
- 6. A million million.
- 7. Done, produced, or occurring every two weeks or twice a week.
- 8. A performance by two people, especially singers, instrumentalists, or dancers.
- 9. Exactly like something else, especially through having been copied.
Down
- 1. Simultaneous performance of action or utterance of speech.
- 2. A vehicle similar to a bicycle, but having three wheels, two at the back and one at the front.
- 5. All existing matter and space considered as a whole; the cosmos. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies; it has been expanding since its creation in the Big Bang about 13 billion years ago.
- 6. A set or group of three people or things.
- 7. An early type of aircraft with two pairs of wings, one above the other.