The answer for this is "All of above"
        
                    
             
        
        
        
Food webs with fewer species are more sensitive to the loss of species and ecosystem disturbances
        
             
        
        
        
Answer:
Fungus 
Explanation:
Flemming found that the growth of bacteria Staphylococcus aureus is inhibited by fungus Penicillium notatum . Then he isolated antibiotic penicillin from that . 
 
        
             
        
        
        
DNA is the genetic composition of the cells in the human body, think of it as the coding for a computer but for cells. These carry your genetic composition (blue eyes, Brown hair, tall, short blah blah blah) and traits like smart, funny, shy.
Hope that helps.