The nurse should advise the mother that flaring nostrils (alar flaring) is one of the symptoms that point out to a potential respiratory distress, and is one of the criteria in assessing the severity of pneumonia in pediatric age groups. The nurse should advise the mother to have her child checked by a pediatrician.
        
             
        
        
        
Answer:
Environmental factors can alter gene expression, cell signalling and cell differentiation.
Explanation:
- Environmental factors can change, stop or disrupt the process of cell signalling and gene expression in organisms. 
- The environmental factors are drugs, chemicals, temperature, etc. 
- With the effect of environmental factors, the organism will try to adapt to the environment by changing the internal process.
-  In case of adaptation, some organism may survive to the changing environment but there is a risk of exhibiting defects and in some case, the result can be death. 
 
        
             
        
        
        
Answer:
Cancer cells don't stop growing and dividing, this uncontrolled cell growth results in the formation of a tumor. Cancer cells have more genetic changes compared to normal cells.
 
        
             
        
        
        
Answer:
Today, one second is defined as “9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom”. That's a mouthful.
 
        
             
        
        
        
Answer:
Option "C" Oxygen is the correct answer to the following question:
Explanation:
We know that, Just as a human absorbs oxygen into the body through inhalation, the oxygen enters into the whole body also in the blood and is used in the body by cells, so we can say that the human body needs a constant supply of oxygen. therefore, the appropriate option is true