Classmate Facts # 63 - Isn't it Amazing...

1. Each time a pole vaulter lands, he absorbs up to 20,000 pounds of pressure per square inch on the joints of his tubular thighbones!

2. The world's largest flower is the Rafflesia. A single bloom can measure 3 feet across. They have no stems or leaves and are parasites on other plants.

3. If all the blood vessels in the body were straightened out and placed end-to-nd, they would be 100,000 miles long!'

4. The Chinese guarded the secret of making silk for 3,000 years. Anyone found revealing the truth would be put to death as a traitor!

5. Piranhas are Fish known for their ferocity. Did you know that the South American natives use their sharp teeth as arrowheads?