grade 7 puzzle
Across
- 2. Bony covering of the brain.
- 3. Elongated tube-like structure extending downwards from the urinary bladder.
- 8. Structural and the functional unit of Nervous system.
- 9. Substances that provoke allergy.
- 10. The opening in the eye that passes light to the lens.
Down
- 1. A long-term disease that causes kidney damage.
- 4. Tissue present beneath the skin with other tissues.
- 5. Wheezing is an example of which environmental variation.
- 6. The allergy characterised by the raised welts on an individual's skin.
- 7. Process of removing excess salts and other wastes from blood.