Czech Republic and Slovakia
A pearl harbor that was what led the U.S. to join WWII
Yes you do get it but u have to type www.bitesize.co.uk
Answer:
Each layer in the Earth's crust changes in fundamental ways the closer it is to the planet's core. There are four layers of the Earth, and each layer has a different density, composition, and thickness. Three hundred years ago, English scientist Isaac Newton created the foundation for current scientific thought about the density of the Earth’s layers.