1) The word "umbrella" contains three vowels: U, E, and A.

2) The Great Barrier Reef in Australia is the largest coral reef system in the world and is visible from space.

3) The strongest natural material known to man is spider silk. It is stronger than steel and more flexible than nylon.

4) The insurance industry employs a wide range of professionals, including underwriters, actuaries, claims adjusters, and insurance agents.