Across
- 2. of Mind Animals' varying ability of cognisance of their environment and feelings
- 5. Whales with actual teeth
- 6. How ova guide sperm to their location to start conception
- 7. When different species of orgnaisms adapt similar traits for fitness
- 8. Hormonally driven developmental stage during certain mammalian life stages related to menstruation
Down
- 1. Hormone for initiating lactation in both humans and pigeons
- 3. Amphibians, birds, and platypodes anatomical structure for egg laying
- 4. Egg laying mammals similar to human's ancestral state