Plastic also takes up to 1000 years to biodegrade and marine life can become entangled is trash in the ocean and possibly die if they are not rescued quick enough(i want to be a marine biologist and help same marine life) 
        
                    
             
        
        
        
Answer:
mutualism and parasitism
Examples:
mutualism: crocodiles and birds
parasitism: mosquitoes and humans
 
        
             
        
        
        
Answer:
natural selection
Explanation:
According to Charles Darwin's theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.
 
        
             
        
        
        
Answer:
the group that contains this organism is protozoa 
 
        
             
        
        
        
Oh man i remember learning about this but i cant remember what the answer is i will see what I can do :D