1) The Dead Sea, located between Jordan and Israel, is the lowest point on Earth's surface. Its saltwater is so dense that people can easily float on its surface.

2) The Appalachian Mountains, running along the eastern coast of the United States, are one of the oldest mountain ranges in the world.

3) Insurance policies often contain exclusions, which are specific events or circumstances that are not covered by the policy.

4) Male seahorses are the ones who give birth to their offspring.