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

2) Online banking and mobile banking have become increasingly popular, providing convenient access to banking services through digital platforms.

3) Kim Kardashian West is an American media personality, businesswoman, and socialite. She gained fame through reality television show "Keeping Up with the Kardashians" and has built a successful brand empire encompassing fashion, beauty, and other ventures.

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