1) The tongue of a blue whale is so big that about 50 people could stand on it.

2) The signing of the Magna Carta in 1215 laid the foundation for modern democratic principles and limited the powers of the monarchy in England.

3) Banks play a vital role in the economy by facilitating the flow of funds between savers and borrowers, providing loans, and offering various financial services.

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