Answer:
The atmosphere is a closed system
Explanation:
Because inside the atmosphere open system
 
 
        
             
        
        
        
Simple....
as you've learned... cells create tissue..tissue creates organs...organs create organ systems..and organ systems create organisms. They all work together to create something...
An example:
muscle cell-->>muscle tissue-->>heart-->>circulatory system-->>the circulatory system makes up a part of the body.
Thus, your answer.
        
             
        
        
        
Answer:
a drug called an antibiotic
Explanation:
A drug called antibiotics is a treatment used for a bacterial infection such as strep throat. 
Antibiotics are medicines that are used to treat a wide range of bacterial infections. 
These drugs destroys bacteria by preventing them from replicating and reproducing their copies. This way the strain is unable to continue one of its essential life function. 
These substances are active against bacteria and provides a toxic condition for them to replicate. 
 
        
             
        
        
        
The type of glial cells are particularly at risk from the disease are the Schwann cells.  This disease is caused by a bacterium, Corynebacterium diphtheriae, and is caused when the bacteria releases a toxin, or poison, into a person's body. The Schwann cells produces insulating myelin sheath that covers the axons of many neurons. These cells may suffers immune or toxic attacks with diphtheria infection. 
        
             
        
        
        
<span>The answer would be A. it would not be D because marine life does not concern metals and other resources like that. It would be A because life needs carbon, it already does, but it needs to be well balanced and not disrupted.
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