Polymers are many moments strung together. They are linked together by dehydration reactions. (Remove water)
        
             
        
        
        
Because of the soil the rocks are in. If They stayed in that soil for a while which affected the compounds, shifting the mineral composition.
        
                    
             
        
        
        
<span>Some sources stated that in the North Atlantic, the rate of movement is only about 1 cm (about 0.4 in) per year, while in the Pacific it amounts to more than 4 cm (almost 2 in) annually, while two others said the plates, in general, traveled from 5 to 10 cm/yr.</span>
        
             
        
        
        
I know that there’s 40 different species of boa constrictor
Some of the morphs include albino boa, anery boa, Aztec boa, blood boa, boawoman caramel boa, eclipse boa, ghost boa, hypo boa, jungle boa, leopard boa, motley boa, paradigm boa, snow boa, snowglow boa, and sunglow boa.
Not sure if that’s the answer you’re looking for but I tried
        
             
        
        
        
Answer:
seleccion natural, habilitar
english translation: natural selection, and habilitate.