Answer:
it illustrated natural selection because the most favorable traits live longer than the unfavorable traits.
Explanation:
 
        
             
        
        
        
Earth's crust is made of rock, and rock is made of natural substances called minerals. There are three main types of rock: sedimentary, igneous, and metamorphic rock. Each type is produced in different ways. The oldest rocks on Earth were formed about 3.8 billion years ago.
        
                    
             
        
        
        
Ethologist :D ..............................
        
                    
             
        
        
        
 
warm front 
// answer was short so added this text //
 
        
             
        
        
        
Answer:
Benthic Zone-  bottom of ocean
Pelagic Zone- the open ocean that is not near the  coast.
Oceanic zone- Zone that is beyond the continental shelf
Neritic zone- Zone that exists over the continental shelf
Photic zone- Zone where sunlight pass through
Aphotic zone- Zone where sunlight cannot pass through
Explanation:
There two important zones of the  ocean that can be termed as Benthic Zone which lies at bottom of ocean or sea and Pelagic Zone that could be imagined as a cylinder or water column that goes from the surface of the sea or ocean to its bottom. At the very bottom of the sea there lies an ecological region termed as Benthic Zone.The pelagic zone can also be termed as the open-ocean zone and it is in contrast with water that is nearer to the coast or continental shelf. 
There are different zones that lies within a Pelagic Zone. They are 
Oceanic, Neritic, Photic, Aphotic. The zone that lies beyond the continental shelf comes under this oceanic zone and Photic and Aphotic as the name suggests it refers to light. It referes to the zones where sunlight can penetrate and can not penetrate respectively.