False. Both adding and taking away an organism affects a food chain.
        
             
        
        
        
Answer:
They provide structure for the body
Explanation: 
 they take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function.
 
        
             
        
        
        
Spermatogonia is my answer
        
                    
             
        
        
        
Answer:
Bacteria are microorganisms and they are useful to us. Bacteria are economically important as these microorganisms are used by humans for many purposes. The beneficial uses of bacteria include the production of traditional foods such as yogurt, cheese, and vinegar. Microbes are also important in agriculture for the compost and fertilizer production. Bacteria are used in genetic engineering and genetic changes.