Answer:
There are four layers of the Earth, including Inner Core, Outer Core, mantle, and Crust. Each layer has its characteristics because of its temperature and formation. 
The inner core is solid with iron and other metal deposit in it. The outer core is liquid, while the mantle is composed of silicate rocks. The crust is the outer layer of the earth, consist of different types of rocks. 
The earth was able to develop a layer structure because of the climatic change it had millions of years ago, where the hardest metal reached to its core. 
  
 
        
             
        
        
        
<span>Their progress and wealth is highly dependent on the harvests, and
the price of grain. They probably have to import some industrial
products and if they had a bad year (weather, other catastrophies, poor
technology) they can't get the necessary amount of industrial products
in exchange for their surplus e. g. in grain. </span>
        
             
        
        
        
Answer:
The Hubble classification, often called the tuning fork diagram
 
        
             
        
        
        
South america has changed the least as it moved very little. india and australia actually broke apart from africa to go to where they are now... so id say australia and india changed the most