The answer you are looking for is “organ system”
        
             
        
        
        
The answer is F, false. Natural selection is still involved, with stronger and more procreative individuals spreading their genes. An example of when natural selection is not involved would be when human breeders look for specific traits and breed accordingly.
        
             
        
        
        
Both prokaryotic and eukaryotic cells have a nucleus and ribosomes.
        
             
        
        
        
Answer:
Ecosystem, community, species, population
Explanation:
 
        
                    
             
        
        
        
Answer:
Aquatic ecosystems include oceans, lakes, rivers, streams, estuaries, and wetlands. Within these aquatic ecosystems are living things that depend on the water for survival, such as fish, plants, and microorganisms. These ecosystems are very fragile and can be easily disturbed by pollution.
Explanation: