Across
- 4. the bird who was able to understand colour and shape
- 5. something of or from outside the earth or its atmosphere
- 7. the researcher who spent thirty years studying Alex.
- 8. it means both hope and the act of breathing
- 9. the observation center
- 10. According to Hindu mythology, the universe was created with this sound
Down
- 1. to identify from an previous encounter or memory
- 2. the type of animal Alex is
- 3. copying one's behavior or the way of learning how to speak.
- 4. regard something as being due to (a cause).
- 6. the reason why there is no sign of life anywhere except on Earth
- 8. a creature from another planet