Answer:
The animals could change it. For example, a bunny could dig a hole in the ground, making a home for other animals inside of it, too, changing the animals' living environment.
Or natural disasters could change their environment, too. For example, if a landslide occurred and covered a pond, frogs and snakes could lose their living areas and food, which would make them have to move to a different area, changing another ecosystem.
 
        
             
        
        
        
Answer:
I believe that the answer is A.
Explanation:
This option makes the most sense because of the industrial and agricultural revolutions. 
 
        
             
        
        
        
Answer:
Front the atmosphere that's from environment
 
        
             
        
        
        
Processes by which organisms produce food
        
                    
             
        
        
        
<span>In order for individuals best suited for growth and reproduction in a particular environment to contribute disproportionately to the next generation natural selection must take place. Natural selection is one of the basic mechanism of evolution. This mechanism leads</span> to adaptations and adaptations contribute to survival and reproduction.