Rain forest plants all work together to provide food and shelter for rain forest animals, as well as to convert carbon dioxide to oxygen. Ground-level competition for light and food has resulted in some unusual plant evolution.
        
                    
             
        
        
        
The red line is the wavelength 
The blue line is the amplitude
        
             
        
        
        
When the patient who is nothing by mouth (NPO) (no food or fluids allowed) develops an adverse reaction to a new intravenous (IV) drug, then the nurse will take action like recording the reaction, stopping the further administration of the drug and notify the health care provider.
Nothing by mouth (NPO) is a period of time in which the patient is advised not to eat or drink anything. Doctors suggest avoiding eating food or drinking water during the medical or surgical procedure to ensure the correct report or successful operation of the patient. 
NPO is a common practice, and it instructs that patients should not take solid and liquid before receiving general anaesthesia.
Learn more about the NPO here
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Answer: I think it's c im sorry if it's wrong
Explanation: I took the test on Monday