A. Ribs
B. Both A & C
C. Dental enamel
D. Skull bones
🧠 Explanation:
Dental enamel is the hardest substance in the human body, protecting teeth. For biology students, this highlights human anatomy, making it a key topic for studying physiology, dentistry, and biology. Enamel resists wear. Understanding this ensures knowledge of body structures. It’s essential for analyzing biology, medicine, and health sciences. Studying dental enamel offers insights into how bodies protect teeth, crucial for biology, dentistry, and health sciences.