Based on what you have read, which of the following statements are correct? Check all of the boxes that apply. A) Some scientists think the first migrants to the Americas came by boat.

B) Some scientists claim migrants could not come by land because there was no land bridge.

C) Some scientists think the first migrants to the Americas came by crossing a land bridge.

D) Most scientists believe the first migrants came to North America from Asia.

E)Most scientists believe the first migrants came to North America from South America.

F) Scientists have no theories about how the first migrants came to the Americas.