Across
- 4. of birds
- 6. a unit for measuring the number of cycles that happen every second, used especially in electronics
- 8. the number of times something happens within a particular period, or the fact of something happening often or a large number or times
- 9. very small plants and animals that float on the surface of the sea and on which other sea animals feed
- 10. of elephants
- 11. a very large sea mammal that breathes air through a hole at the top of its head
Down
- 1. of puppies
- 2. of wolves
- 3. all the living things in an area and the way they affect each other and the environment
- 5. a very large area of sea
- 7. an electronic device or piece of software that records information about your physical activity
- 9. of lions