Across
- 3. summer sleep
- 4. mammals carrying babies in a pouch on their bodies
- 7. land animals living on trees
- 8. an egg-laying animal
- 9. habitat characteristic of crocodiles
- 10. an amphibian
- 11. breathing organ of whales
- 13. floating cluster of frog's eggs
- 14. provides nutrition to embryo
Down
- 1. process by which living things produce young ones
- 2. process of keeping the eggs warm
- 5. part of egg which is rich source of protein
- 6. thick layer of fat under the skin of animals of cold region
- 10. baby of a grasshopper
- 12. protective covering of an egg